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Uniform Circular Motion Review

Total questions: 44

Worksheet time: 36mins

Name
Class
Date
1.
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
2.

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

a)
A
b)
B
c)
C
d)
D
3.
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
4.
Centripetal acceleration acts towards the ___________ of the circular motion
a)
center
b)
circumference
c)
outside
d)
radius
5.
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
6.
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
7.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
8.
What is the force that causes centripetal acceleration when a car goes around a curve?
a)
Friction
b)
Gravity 
c)
Normal
d)
Tension
9.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
10.
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
11.
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
12.
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
13.
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
14.
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
15.
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
16.

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

17.

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

18.
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
19.

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
20.
Which phase of the moon is represented in this diagram?
a)
new moon
b)
first quarter
c)
full moon
d)
last quarter/third quarter
21.
What causes tides?
a)
gravity
b)
wind
c)
spring
d)
neap
22.
Which body has the greater effect on Earth's tides?
a)
Sun
b)
Saturn
c)
Moon 
d)
Venus
23.
What type of tide will occur at 9:30 a.m.?
a)
low 
b)
high 
c)
none
d)
high and low
24.

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
25.
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
26.

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

27.
How many high tides does a place have each day?
a)
3
b)
4
c)
5
d)
2
28.
How many times per month does a spring tide occur?
a)
Once
b)
twice
c)
three times
d)
it changes every month
29.

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}

30.

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

31.

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

32.
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
33.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
34.
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
35.
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
36.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
37.

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

38.

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

39.

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

40.

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

41.

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.

42.

The earth orbits around the sun.

a)

Rotation

b)

Revolution

43.

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

a)

Rotation

b)

Revolution

44.

The earth spins on its axis.

a)

Rotation

b)

Revolution

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