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Uniform Circular Motion Quiz

Total questions: 208

Worksheet time: 4hrs 49mins

Name
Class
Date
1.

Can an object be accelerated if its speed remains constant?

4 lines
2.

Can an object be accelerated if its velocity remains constant?

4 lines
3.

Explain the law of conservation of angular momentum.

4 lines
4.

Derive an expression for rotational kinetic energy.

4 lines
5.

Derive centripetal acceleration when speed is uniform and relate centripetal acceleration with angular velocity.

4 lines
6.

A tennis ball on a string is spun clockwise around a circle. After the string breaks, which path will the tennis ball follow?

a)

Path I

b)

Path II

c)

Path III

d)

Path IV

7.

•A student on an amusement park ride moves in a circular path with a radius 3.5 m once every 8.9s. The student moves at an average speed of

a)

0.39 m/s

b)

1.2 m/s

c)

2.5 m/s

d)

4.3 m/s

8.

Is the centrifugal force a real force acting on your body in the gravitron?

a)

Yes, you are pushed outwards from the center

b)

No, it just feels like you are being pushed out, but no force is actually pushing you outwards

c)

Maybe...

d)

Bigfoot is always the answer

9.

A body, B, is moving at constant speed in a horizontal circular path around point P. Which diagram shows the direction of the velocity (v) and the direction of the centripetal force (Fc) acting on the body?

a)

1

b)

2

c)

3

d)

4

10.

•What is the centripetal acceleration of a toy ball on the end of a 1.44 meter long string if it is moving at 12 meters per second?

a)

0.12 m/s^2

b)

8.33 m/s^2

c)

0.173 m/s^2

d)

100 m/s^2

11.

•What is the centripetal acceleration acting on a 2000 kilogram airplane if it turns with a radius of 1000 meters while moving at 300 meters per second?

a)

180,000 m/s^2

b)

0.3 m/s^2

c)

90 m/s^2

d)

600 m/s^2

12.

•What is the centripetal force acting on a 2000 kilogram airplane if it turns with a radius of 1000 meters while moving at 300 meters per second?

a)

90000N

b)

600N

c)

1.8x105N1.8x10^5N  

d)

1.77x106N1.77x10^6N  

13.
A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?
a)
A
b)
B
c)
C
d)
D
14.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
15.
What is the direction of the acceleration at point A, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
16.
What is the direction of the acceleration at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
17.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
18.
Which statement is true about an object that is traveling in uniform circular motion?
a)
The speed of the object varies.
b)
The net force on the object is directed toward the center of the circular path.
c)
The direction of the object's velocity is constant.
d)
The net force on the object is directed away from the center of the circular path.
19.
Centripetal acceleration always points
a)

in the direction of the object's motion

b)

in the opposite direction of the object's motion

c)

towards the center of the circle

d)

towards the outside of the circle

20.
What is the equation of motion under constant acceleration?
a)
F = mv
b)
v = at
c)
v2 = u2 + 2as
d)
v = u + at
21.
Which of the following is an example of rectilinear motion?
a)
Rolling of a ball
b)
Projectile motion
c)
Motion of a car on a curved path
d)
Motion of a car on a straight path
22.
How is the equation of motion under constant acceleration derived?
a)
By using the first law of motion
b)
By using the second law of motion
c)
By using the third law of motion
d)
By using the fourth law of motion
23.
Which of the following is an example of circular motion?
a)
Motion of a car on a straight path
b)
Motion of a car on a curved path
c)
Projectile motion
d)
Motion of a body revolving around a centre
24.
What is the equation of motion under uniform acceleration?
a)
v = u + at
b)
v = u - at
c)
F = ma
d)
a = v - u/t
25.
What does the term 'inertia' refer to in the context of motion?
a)
The tendency of a body to remain in its state of rest or of uniform motion
b)
The force that acts on a body to change its state of rest or of uniform motion
c)
The acceleration of a body due to the applied force
d)
The velocity of a body due to the applied force
26.
Which of Newton's laws of motion states that for every action, there is an equal and opposite reaction?
a)
First law of motion
b)
Second law of motion
c)
Third law of motion
d)
Fourth law of motion
27.
Which of the following is an example of uniform circular motion?
a)
Motion of a car on a curved path
b)
Motion of a body revolving around a centre
c)
Projectile motion
d)
Rolling of a ball
28.
What is the SI unit of acceleration?
a)
Kilograms (kg)
b)
Meters per second (m/s)
c)
Newtons (N)
d)
Meters per second squared (m/s2)
29.
Which of Newton's laws states that a body will remain in its state of rest or of uniform motion unless an external force acts upon it?
a)
First law of motion
b)
Second law of motion
c)
Third law of motion
d)
Fourth law of motion
30.

What is the velocity of an object launched straight up at its highest point?

a)

zero

b)

equal to its vx

c)

½ its maximum value

d)

equal to gravity

31.

Which hits the ground first if they start at the same height: a dropped ball or a ball launched with a

horizontal velocity?

a)

the launched ball

b)

the dropped ball

c)

they both hit at the same time

32.
If I want to find out when an object hits the ground, I should _________.
a)

Find th y-intercept

b)

Find the positive x-intercept

c)

Replace x with 0 and evaluate.

d)

Find the x-coordinate of the vertex

33.

At what point is vx= 0 m/s?

a)

A

b)

B

c)

C

d)

D

e)

None of these points

34.

What do you need to find?

a)

positive x-intercept

b)

y-intercept

c)

x of the vertex

d)

y of the vertex

35.

The fact that an apple and a watermelon, dropped simultaneously from the same height, would hit the ground at the same time indicates that

a)

you don't like apples or watermelons.

b)

greater masses have greater acceleration.

c)

lesser masses have greater acceleration.

d)

acceleration is independent of mass.

36.

Select all the electromagnetic waves from the list. Choose more than one answer.

a)

Visible Light

b)

Sound

c)

Ultraviolet

d)

Water

e)

Microwaves

37.
Polarizing lenses prove that light
a)
Is a longitudinal wave that vibrates constantly.
b)
Is a transverse wave that can only vibrate in a single plane.
c)
Is a longitudinal wave that travels at a speed 3⋅10⁸ m/s
d)
Is a transverse wave that has multiple planes of vibration.
38.

In this diagram, which is the angle of incidence?

a)

Angle A

b)

Angle B

c)

Angle C

d)

Angle D

39.

When a compression interferes with another compression, what occurs?

a)

They counteract and the wave stops.

b)

They combine to create a larger compression.

c)

They combine to create a rarefaction.

d)

None of the above.

40.

What is a natural vacuum which sound cannot travel through?

a)

Water

b)

Air

c)

Liquids

d)

Outer space

41.

Choose the correct formulas for lateral magnification

a)

Z=−fa−fZ=-\frac{f}{a-f}  

b)

Z=−a′−ff−aZ=-\frac{a'-f}{f-a}  

c)

Z=a′−ffZ=\frac{a'-f}{f}  

d)

Z=fa−fZ=\frac{f}{a-f}  

e)

Z=−a′−ffZ=-\frac{a'-f}{f}  

42.

what type of mirror is this

a)

concave

b)

convex

c)

translucent

d)

plano

43.

If the scale bar measures 60 mm and the actual size it represents is 30 μm , what is the magnification?

a)

20X

b)

5,000X

c)

150X

d)

2,000X

44.

Serena measured the image of one of the bacterial cells to be 32 mm. If the magnification of the image is 8,000X, what is the actual size of the bacterial cell?

a)

4 μm

b)

0.004 μm

c)

256,000 μm

d)

0.25 μm

45.

what type of mirror is this

a)

concave

b)

convex

c)

translucent

d)

plano

46.

What simple machines are in this image

a)

Wedge and pulley

b)

Lever and wheel/axel

c)

screw

d)

incline plane

e)

none of the above

47.

What simple machine is in this image

a)

Wedge

b)

Lever

c)

screw

d)

wheel and axel

e)

Incline plane

48.

If you use a crowbar to get the lid off of a bucket, what simple machine are you using?

a)

inclined plane

b)

pulley

c)

wheel and axle

d)

lever

49.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
50.
The lever class in the picture is _?_.
a)
1
b)
2
c)
3
51.

What simple machines are in this image

a)

Wedge and pulley

b)

Lever and wheel/axel

c)

screw

d)

incline plane

e)

none of the above

52.
Name this simple machine. 
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
53.
Name this simple machine. 
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
54.
Identify this simple machine
a)
Lever
b)
Wheel & Axle
c)
Inclined Plane
d)
Screw
55.

What is the SI unit of acceleration?

a)

m·s2

b)

m2/s

c)

m/s2

d)

m/s

56.

What is the speed of an object at rest?

a)

0.0 m/s

b)

9.81 m/s

c)

1.0 m/s

d)

9.8 m/s

57.

Acceleration is defined as

a)

the rate of change of velocity.

b)

the change in velocity.

c)

rate of displacement.

d)

the rate of change of displacement.

58.
Which graph shows: a car slowing down and coming to a stop.
a)
A
b)
B
c)
C
d)
D
59.
What is the definition of velocity?
a)
A force that opposes motion
b)
Uniform circular motion
c)
The speed of an object in a particular direction
60.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
61.

Which of the following depict the speed of the bowling ball?

a)
A
b)
B
c)
C
d)
D
62.
Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
a)
10 N
b)
20 N
c)
30 N
d)
40  N
63.
Centripetal acceleration acts towards the ___________ of the circular motion
a)
center
b)
circumference
c)
outside
d)
radius
64.
Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?
a)
0.25 ms-2
b)
0.5 ms-2
c)
1 ms-2
d)
2 ms-2
65.
What object experiences uniform circular motion?
a)
A car speeding up as it turns left
b)
A car traveling around a roundabout at a constant speed
c)
A car slowing down as it crests a tall hill
d)
A car traveling down the road at a constant speed
66.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
67.
What is the force that causes centripetal acceleration when a car goes around a curve?
a)
Friction
b)
Gravity 
c)
Normal
d)
Tension
68.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
69.
You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.
a)
18 N
b)
36 N 
c)
72 N
d)
144 N
70.
A test car moves at a constant speed around a circular track.  If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s2, what is the car's tangential speed?
a)
19.7 m/s
b)
5.99 m/s
c)
0.17 m/s
d)
388.01 m/s
71.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?
a)
9
b)
18
c)
72
d)
144
72.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were divided by 2?
a)
9
b)
18
c)
72
d)
144
73.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if one of the masses were doubled?
a)
9
b)
18
c)
72
d)
144
74.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if both of the masses were doubled?
a)
9
b)
18
c)
72
d)
144
75.

Two object each have masses of 9,000,000 kg and are 1 meter apart from each other. What's the force of gravity between them?

a)

5402 N

b)

6320 N

c)

7541 N

d)

7945 N

76.

Two objects each have masses of 4500 kg and are .03 meters apart from each other. What's their force of gravity?

a)

.3 N

b)

.7 N

c)

1.1 N

d)

1.5 N

77.
What type of tides would this arrangement of earth-moon-sun create?
a)
neap tide
b)
spring tide
c)
new moon tide
d)
full moon tide
78.

What type of tide would this arrangement of earth-moon-sun create?

a)
full moon tide
b)
new moon tide
c)
neap tide
d)
spring tide
79.
Which phase of the moon is represented in this diagram?
a)
new moon
b)
first quarter
c)
full moon
d)
last quarter/third quarter
80.
What causes tides?
a)
gravity
b)
wind
c)
spring
d)
neap
81.
Which body has the greater effect on Earth's tides?
a)
Sun
b)
Saturn
c)
Moon 
d)
Venus
82.
What type of tide will occur at 9:30 a.m.?
a)
low 
b)
high 
c)
none
d)
high and low
83.

What do we call the type of tide with small tidal ranges that happen when the sun and moon are at right angles to each other?

a)
Neap Tide
b)
Spring Tide
c)
Larger Change
d)
Smaller Change
84.
Why does the moon's gravitational pull have more of effect on tides than the sun's gravitational pull?
a)
they are the same
b)
the moon is larger than the sun
c)
tides are not caused by the moon
d)
the moon is closer to the Earth than the sun
85.

Why does a spring tide create much higher tides than normal tidal ranges?

a)

Because the moon and sun are combining their gravitational strength

b)

Because the moon is in its spring position, causing it to create more force

c)

Because it happens during springtime when the water is the lightest

d)

Because this is when the moon grows in size and goes super saiyan

86.
How many high tides does a place have each day?
a)
3
b)
4
c)
5
d)
2
87.
How many times per month does a spring tide occur?
a)
Once
b)
twice
c)
three times
d)
it changes every month
88.

Which of the following formulas is the correct equation for the law of Universal gravitation?

a)

F=GM1M2d2F=\frac{GM_1M_2}{d^2}

b)

F=mgF=mg

c)

F=Gd2m1m2F=\frac{Gd^2}{m_1m_2}

d)

F= F=KQ1Q2d2F=\frac{KQ_1Q_2}{d^2}

89.

Find the distance between two objects whose masses are m1 = 4,500 kg, and m2 = 8,700 kg; if the gravitational force between them is F = 2.0 x 10-8 N.

a)

130565.25 m

b)

361.34 m

c)

0.19575 m

d)

0.783 m

90.

Which of the following does not apply to the moment when Spring tides happen?

a)

during new moon

b)

during full moon

c)

when the moon and the earth are alligned with the sun

d)

during quarter moon

91.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
92.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
93.
You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?
a)
Friction
b)
Centripetal Force
c)
Gravity
d)
Inertia
94.
Centrifugal force is a ______
a)
force that pushes you to the outside of a circle during uniform circular motion.
b)
fictitious force that is really just the linear momentum of an object in uniform circular motion.  
c)
The force that keeps the planets in orbit
95.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
96.

The wheel of a bicycle is 0.5 m in diameter, and makes 6.5 rotations in 3.00 s as the bicycle rolls along the bike path. The angular speed of the wheel is

a)

1.4 rpm

b)

1.7 rotaions per second

c)

2.2 rotations/second

d)

0.67 rpm

97.

The wheel of a bicycle is 1.0 m in diameter, and makes 3 rotations in 3 s as the bicycle rolls along the bike path.

What is the linear speed of the wheel at a distance of 0.200 m from the center of the wheel? use 3.14 as pi.

a)

1.3 m/s

b)

1.5 m/s

c)

2.46 m/s

d)

6.28 m/s

98.

A merry go round makes 18 rotations in 2 minutes. What is its angular speed in rpm?

a)

3 rpm

b)

6 rpm

c)

9rpm

d)

12 rpm

99.

A coin rolls across the floor at an angular speed of 3 rotations/second. What is its speed in degrees per second?

a)

360 degrees/second

b)

720 degrees/second

c)

1080 degrees/second

d)

1440 degrees /second

100.

A child sits 0.75 m from the center of a merry go round. The merry go round makes one revolutions in 4 seconds. What is the child's linear speed? (Use 3.14 as pi, and Round your answer to tenths)

a)

1.9 m/s

b)

1.2 m/s

c)

12.6 m/s

d)

720 degrees.

101.

The earth orbits around the sun.

a)

Rotation

b)

Revolution

102.

The sun appears to rise in the east and set in the west.

a)

Rotation

b)

Revolution

103.

The earth spins on its axis.

a)

Rotation

b)

Revolution

104.

A 2.0 kg rock is moving in a 0.5 m horizontal circle every 0.25 s. Which of the following does the rock experience?

a)

no net force

b)

a centripetal acceleration

c)

only the acceleration of gravity

d)

motion due only to its inertia

105.

When dealing with circular motion, the time that it takes to make one revolution of the circle is called the:

a)

rotation.

b)

orbit.

c)

period.

d)

segment.

106.

Why does an object experiencing uniform circular motion have an acceleration?

a)

because it ir changing speed

b)

because it is changing direction

c)

because it is moving n a straight line

d)

because it has mass

107.

An object in uniform circular motion is always moving ________________ the circle.

a)

away from

b)

toward

c)

parallel to

d)

tangent to

108.

In uniform circular motion, which two variables point toward the center of the circle?

a)

the centripetal force and the acceleration

b)

the velocity and the mass

c)

the period and the mass

d)

the time and the radius

109.

Neglecting air resistance, how would the horizontal acceleration and velocity of the hammer change if the thrower releases the chain?

a)

The horizontal acceleration and velocity of the hammer would be along the Vtang vector.

b)

The horizontal acceleration and velocity of the hammer would be inward toward the thrower.

c)

The horizontal acceleration and velocity of the hammer would be straight down by gravity.

d)

The horizontal acceleration and velocity of the hammer would be continue in a circle.

110.

A car moves with a constant speed of 17 m/s on a circular track of 200 m radius. Calculate the acceleration of the vehicle. HINT: a = V2 / R

a)

1.45 m/s2

b)

0.76 m/s2

c)

1.98 m/s2

d)

2.34 m/s2

111.

A 250 kg motorcycle goes around a 20.0 m radius turn at 19.0 m/s. What is the centripetal force on the motorcycle? HINT: f = MV2 / R

a)

2396.6 N

b)

4512.5 N

c)

5006.8 N

d)

5656.7 N

112.

The _______________________ supplies the centripetal force requirement for the car to move in a horizontal circle. Without it, the car would turn its wheels but would not move in a circle (as is the case on an icy surface).

a)

friction force

b)

centrifugal force

c)

normal force

d)

applied force

113.

A ball was swung at constant speed in a horizontal circle on the top of a level lab table. Which of the following was the direction of the acceleration on the ball?

a)

The acceleration was inward along the radius of the circle.

b)

The acceleration was outward along the radius of the circle.

c)

The acceleration was tangent to the circle in the direction of the ball's motion.

d)

D.The acceleration was perpendicular to both the ball's motion and the tabletop.

114.

What is “Centripetal Force”?

a)

Centripetal Force is a force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.

b)

Centripetal Force is the resistance to motion of one object moving relative to another.

c)

Centripetal Force are attractive or repulsive forces between particles that are caused by their electric charges.

d)

Centripetal Force is the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.

115.

Two trucks each have a mass of 3000 kg. The gravitational force between the trucks is 4.00 × 10-5 N. One truck is then loaded with 1000 kg of rock. What would be the new gravitational force between the two trucks? (G = universal gravitation constant = 6.67 10-11 Nm2/kg2

a)

5.32 × 10-5 N

b)

4.75 × 10-5 N

c)

5.75.00 × 10-5 N

d)

6.50 × 10-5 N

116.

In this diagram, what do the red arrows represent?

a)

the acceleration vector

b)

the velocity vector

c)

the centripetal force vector

d)

the force of gravity

117.

moving or tending to move toward a center...

a)

centripetal force

b)

centrifugal force

c)

Tangent

d)

Curvature

118.

the process or act of turning or circling around something

a)

Curvature

b)

Rotation

c)

Radius

d)

Orbit

119.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
120.
Which of the following depict the speed of the blowing ball?
a)
A
b)
B
c)
C
d)
D
121.
Centripetal acceleration always points
a)
in the direction of the object's motion
b)
in the opposite direction of the object's motion
c)
towards the center of the circle
d)
towards the outside of the circle
122.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
123.

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

a)

5 m/s2

b)

17.63 m/s2

c)

10 m/s2

d)

8.81 m/s2

124.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
125.

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

a)
b)
c)
d)
126.
The time taken for one complete circuit is called the... 
a)
Period
b)
Frequency 
c)
Angular velocity
127.

Centripetal force is an acceleration of an object moving in circular path whose direction is _________________________of the circular path and whose magnitude is equal to the square of the speed divided by the radius.

a)

towards the tangent

b)

towards the centre

c)

towards the minimum point

d)

towards the maximum point

128.

In uniform circular motion, the magnitude of the _______________________of an object is constant but the __________ is continually changing.

a)

speed, acceleration

b)

speed, direction

c)

acceleration, speed

d)

acceleration, velocity

129.

________________________ defined as the number of revolutions (cycles/rotations) completed in one second.

a)

frequency

b)

period

c)

distance

d)

centripetal acceleration

130.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
131.

Bruno the bat has a mass of 0.58 kg and flies at a speed of 0.8 m/s in circle of radius 0.5 m. What is his acceleration?

a)

0.25 m/s2

b)

1.3 m/s2

c)

1.6 m/s2

d)

0.74 m/s2

132.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
133.
What is the direction of the acceleration at point A, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
134.
What is the direction of the acceleration at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
135.
Which statement is true about an object that is traveling in uniform circular motion?
a)
The speed of the object varies.
b)
The net force on the object is directed toward the center of the circular path.
c)
The direction of the object's velocity is constant.
d)
The net force on the object is directed away from the center of the circular path.
136.
If the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper? (Hint: C=2πr)
a)
9.4 m/s
b)
6.8 m/s
c)
11.7 m/s
d)
3.5 m/s
137.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
138.

A toy car is following a circular path with a constant speed of v=3 m/s . If the radius of the circular path is 1 m, find The centripetal acceleration of the car

a)

30 m/s2

b)

3 m/s2

c)

9 m/s2

d)

6 m/s2

139.

what is the centripetal acceleration formula?

a)
b)
c)
d)
140.
Is it possible for an object moving with a constant speed to accelerate?  Explain. 
A) No, if the speed is constant then the acceleration is equal to zero.  B) No, an object can accelerate only if there is a net force acting on it.  
C) Yes, although the speed is constant, the direction of the velocity can be changing.  
D) Yes, if an object is moving it can experience acceleration 
a)
A
b)
B
c)
C
d)
D
141.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
142.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
143.

The linear velocity is always _____ to the line of a circle.

a)

outwards

b)

towards the center

c)

tangent

d)

faster

144.
Centripetal acceleration acts towards the ___________ of the circular motion
a)
center
b)
circumference
c)
outside
d)
radius
145.
What object experiences uniform circular motion?
a)
A car speeding up as it turns left
b)
A car traveling around a roundabout at a constant speed
c)
A car slowing down as it crests a tall hill
d)
A car traveling down the road at a constant speed
146.
What is the force that causes centripetal acceleration when a car goes around a curve?
a)
Friction
b)
Gravity 
c)
Normal
d)
Tension
147.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
148.

Where is the net force when the rollercoaster is at the top of the loop?

a)

Towards the sky

b)

Towards the Right

c)

Towards the left

d)

Towards the center of the circle

149.

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

a)

5 m/s2

b)

17.63 m/s2

c)

10 m/s2

d)

8.81 m/s2

150.

What is the equation for centripetal force?

a)

v = 2πr/T

b)

a = v2/r

c)

F = mv2/r

d)

F = ma

151.
What happens to the centripetal force exerted on an object if you triple the velocity?
a)
it increases to 3X
b)
it decreases to 6X
c)
it increases to 6X
d)
it increases to 9X
152.
If the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper? (Hint: C=2πr)
a)
9.4 m/s
b)
6.8 m/s
c)
11.7 m/s
d)
3.5 m/s
153.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
154.
Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s
a)
4.1 kg
b)
3.6 kg
c)
2.5 kg
d)
1.8 kg
155.

A satellite is orbiting the Earth at a speed of 1200m/s, find the radius of revolution if the Time period is 35000s

a)

1200

b)

67km

c)

6700Km

d)

35000

156.

During its trip a car of mass 1500kg is traveling around a corner as shown in the picture. The car rounds a corner of radius 100m at a speed of 15m/s. Find the centripetal acceleration

a)

22.5m/s

b)

2.25m.s

c)

15m/s

d)

32.5m/s

157.

During its trip a car of mass 1500kg is traveling around a corner as shown in the picture. The car rounds a corner of radius 100m at a speed of 15m/s. Find the centripetal force acting on the car.

a)

300N

b)

15000N

c)

3375N

d)

15N

158.

During its trip a car of mass 1500kg is traveling around a corner as shown in the picture. What actual force is equivalent to the centripetal force in this situation?

a)

Tension

b)

Friction

c)

Centrifugal force

d)

gravity

159.

Bruno the bat has a mass of 0.58 kg and flies at a speed of 0.8 m/s in circle of radius 0.5 m. What is his acceleration?

a)

0.25 m/s2

b)

1.3 m/s2

c)

1.6 m/s2

d)

0.74 m/s2

160.

A race car completes three laps of a circular track with a radius of 35 m in 9.0 seconds. Determine the speed of the car.

a)

3.9 m/s

b)

73.3 m/s

c)

24.4 m/s

d)

1.0 m/s

161.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
162.
Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s
a)
4.1 kg
b)
3.6 kg
c)
2.5 kg
d)
1.8 kg
163.
Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
a)
10 N
b)
20 N
c)
30 N
d)
40  N
164.

You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.

a)

18 N

b)

36 N

c)

72 N

d)

144 N

165.

What's the centripetal force of a .2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?

a)

2.05 N

b)

2.57 N

c)

2.90 N

d)

3.13 N

166.

A particle moves in a horizontal circle of radius 0.60 m with a constant speed and a period of revolution of 0.02 s. The frequency of the revolution is (a)   .

167.

A particle moves in a horizontal circle of radius 0.60 m with a constant speed and a period of revolution of 0.02 s. The linear velocity of the particle is (a)   .

168.

An object is moving round a horizontal circle of radius 0.80 m, at a constant angular frequency of 20 rpm. The centripetal acceleration of the object is (a)   .

169.

A 1.3 m long fishing line rated as "10 lb test" that can stand a force of 10 lb (44.48 N) is attached to a rock of mass 0.5 kg. The maximum speed at which the rock can be rotated without breaking the line is (a)   .

170.

The figure shows a coin on a turn-table is rotating at 1.0 r.p.s. The coefficient of static friction between the coin and the turn-table is 0.50. The maximum distance of the coin from the centre O of the turn-table for it to move in a circle is (a)   .

171.
Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
a)
10 N
b)
20 N
c)
30 N
d)
40  N
172.

You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.

a)

18 N

b)

36 N

c)

72 N

d)

144 N

173.

What's the centripetal force of a 0.2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?

a)

2.05 N

b)

2.57 N

c)

2.90 N

d)

3.13 N

174.

Which vector represents the direction of the acceleration of a ball traveling in a circular path?

a)

A

b)

B

c)

C

d)

D

175.

Which of the following vectors depict the velocity of a ball traveling in a circular path?

a)

A

b)

B

c)

C

d)

D

176.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?
a)
9
b)
18
c)
72
d)
144
177.

Two objects are attracted to each other with 36 N of gravitational force.

What would the force between them be if the distance between them was reduced to half its original distance?

a)

9

b)

18

c)

72

d)

144

178.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if one of the masses were doubled?
a)
9
b)
18
c)
72
d)
144
179.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if both of the masses were doubled?
a)
9
b)
18
c)
72
d)
144
180.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
181.
Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s
a)
4.1 kg
b)
3.6 kg
c)
2.5 kg
d)
1.8 kg
182.
Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
a)
10 N
b)
20 N
c)
30 N
d)
40  N
183.

What's the acceleration of gravity of a planet with a mass of 1 x 1025 kg and a radius of 5x106 meters?

a)

.267 m/s2

b)

2.67 m/s2

c)

26.7 m/s2

d)

267 m/s2

184.

Two object each have masses of 9 x 106 kg and are 1 meter apart from each other. What's the force of gravity between them?

a)

5402 N

b)

6320 N

c)

7541 N

d)

7945 N

185.

What's the centripetal acceleration of a 0.2 kg yoyo spun in a circle with a radius of 0.7 meters at a velocity of 3 m/s?

a)

8.23 m/s2

b)

10.54 m/s2

c)

12.86 m/s2

d)

17.39 m/s2

186.

What's the centripetal force of a 0.2 kg yoyo spun in a circle with a radius of 0.7 meters at a velocity of 3 m/s?

a)

2.05 N

b)

2.57 N

c)

2.90 N

d)

3.13 N

187.
You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?
a)
Friction
b)
Centripetal Force
c)
Gravity
d)
Inertia
188.

The drum of a washing machine rotates 1800 times in 3 minutes. What is the period?

a)

0.1 s

b)

0.2 s

c)

0.3 s

d)

0.5 s

189.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
190.

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

a)
b)
c)
d)
191.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
192.
The time taken for one complete circuit is called the... 
a)
Period
b)
Frequency 
c)
Angular velocity
193.

Is it possible for an object moving with a constant speed to accelerate?  Explain. 
A) No, if the speed is constant then the acceleration is equal to zero.  

B) No, an object can accelerate only if there is a net force acting on it.  
C) Yes, although the speed is constant, the direction of the velocity can be changing.  
D) Yes, if an object is moving it can experience acceleration 

a)
A
b)
B
c)
C
d)
D
194.
Which one of the following statements concerning the two “gravitational constants” G, the universal constant,  and g the magnitude of the acceleration due to the gravity is true? 
a)
The value for G and g do not depend on location. 
b)
The value of G is the same everywhere in the universe, but the value of g is not. 
c)
The value of G and g are equal on the surface of any planet, but in general, vary with location in the universe. 
195.

A pilot experiences centripetal acceleration of 2g's (2 x 9.8 m/s2) while maneuvering a loop at a speed of 400 m/s. What is the radius of the loop?

a)

203 m

b)

8163 m

c)

80,003 m

d)

23 m

196.
Planets orbit the Sun in a shape called a(n)
a)
circle
b)
ellipse
c)
focus
d)
perihelion
197.

Where would the planet be moving fastest?

a)
Position A to B
b)
Position B to C
c)
Position H to I
d)
Position I to J
198.

What is true about the area between points A-B and the Sun, and the area between points H-I and the Sun?

a)
The area between A, B and the Sun is the largest.
b)
The area between H, I and the Sun is the largest
c)
Both areas are equal in size
d)
There is not enough information to determine the areas
199.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
greater
b)
same
c)
zero
d)
less
200.

Which would have the greater linear velocity the outer horse on a carousel or the inner?

a)

Outer

b)

Inner

c)

Both have the same velocity

d)

Depends on the mass of the horse

201.

Why do the inner horse and outer horse have different velocities?

a)

The outer horse has to travel a greater distance in the same amount time as the inner

b)

This is untrue the inner horse travels faster because it it does not have as far to go as the outer

c)

This is not true. The horses travel at the same speed because they are connected on the carousel.

d)

The outer horses are smaller so they can travel faster.

202.

Which of the following planets has the greatest orbital period?

a)

Mars

b)

Earth

c)

Venus

d)

Mercury

203.

A hamster runs on his wheel causing it spin around 10 times every 2.5 seconds. What is the frequency of the wheel?

a)

0.25 Hz

b)

4 Hz

c)

25 Hz

d)

Not enough information

204.

The formula to determine circumference is:

a)

2πr2\pi r

b)

πr2\pi r^2

c)

12 bh\frac{1}{2\ }bh

d)

43πr3\frac{4}{3}\pi r^3

205.
Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s
a)
4.1 kg
b)
3.6 kg
c)
2.5 kg
d)
1.8 kg
206.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
207.
__________holds all of the planets in orbit around the sun.
a)
Force
b)
Motion
c)
Weight
d)
Gravity
208.
Force of gravity is inversely proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time

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11th Grade