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Circular, Rotational, Gravity

Total questions: 41

Worksheet time: 32mins

Name
Class
Date
1.

Categorize something that is measured in radians per second

a)

Linear Distance

b)

Angular Distance

c)

Linear Speed

d)

Angular Speed

2.

360 degrees in radians is

a)

π\pi

b)

2π2\pi

c)

12π\frac{1}{2\pi}

d)

3.14

3.

2 cars are moving at the speed of 22 m/s. The radius of the 1st vehicle's tire is 22 cm and of the 2nd vehicle's tires is 30 cm. Which tire has a greater angular speed?

a)

the 1st car

b)

the 2nd car

4.

Calculate the angular velocity of a car tire with a radius of .31m traveling a speed of 22 m/s

a)

71 rad/s

b)

72 rad/s

c)

73 rad/s

d)

75 rad/s

5.

Determine the angular velocity in rad/s of a gyroscope rotating at 360rpm (revolutions per minute).

a)

135717 rad/s

b)

38 rad/s

c)

360 rad/s

d)

2π rad/s

6.

A carousel rotates at an angular speed of 40 rad/s. There are two riders, A and B, on the ride. Which one has the LARGER angular speed?

a)

A

b)

B

c)

Both the same

d)

Impossible to Tell

7.

A carousel rotates at an angular speed of 40 rad/s. There are two riders, A and B, on the ride. Which one has the LARGER tangential speed?

a)

A

b)

B

c)

Both the same

d)

Impossible to Tell

8.

A carousel rotates at an angular speed of 40 rad/s. There are two riders, A and B, on the ride. If rider B is 2m away from the center, what is the centripetal acceleration of the rider?

a)

800 m/s2

b)

3200 m/s2

c)

20 m/s2

d)

40 m/s2

9.

A bowling ball is traveling in a circular path because it is attached to a chain. Which arrow represents the velocity of the ball?

a)
A
b)
B
c)
C
d)
D
10.

A bowling ball is traveling in a circular path because it is attached to a chain. Which arrow represents the direction the ball will travel if the chain is cut?

a)
A
b)
B
c)
C
d)
D
11.

A bowling ball is traveling in a circular path because it is attached to a chain. Which arrow represents the force on the bowling ball?

a)
A
b)
B
c)
C
d)
D
12.

A bowling ball is traveling in a circular path because it is attached to a chain. What is the force keeping the bowling ball in a circular path?

a)

Normal Force

b)

Frictional Force

c)

Tension

d)

Gravity

13.

A bowling ball is traveling in a circular path because it is attached to a chain. Which arrow represents the acceleration of the ball?

a)
A
b)
B
c)
C
d)
D
14.
A horse gallops around a circular arena.  The centripetal force on the horse is ___.
a)
directed outward
b)
tension
c)
directed toward the center of the arena
d)
9.8 N
15.
What relationship exists between the radius of a circle and the centripetal acceleration?
a)
direct
b)
inverse
c)
exponential
d)
inverse squared
16.
A car with mass m travels around a curve with velocity v. What do you know about the centripetal force if the velocity triples?
a)
Nothing 
b)
The centripetal force triples
c)
the centripetal force multiplies by 9
d)
The centripetal force divides by 3
17.
Calculate the amount of centripetal force it takes for a softball pitcher to rotate a ball with a velocity of 3 m/s if the ball weighs .12 kg and her arm is .65 meters long.
a)

.38 N

b)

1.23 N

c)

.55 N

d)
1.66 N
18.
When an object is in circular motion it is constantly changing its velocity.
a)
True
b)
False
19.
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 ground
20.
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
21.
What is the relationship between centripetal force and the mass of an object?
a)
direct
b)
inverse
c)
exponential
d)
inverse squared
22.

In the diagram of the car, if the driver took his hands off the steering wheel, which arrow correctly shows the direction the car would travel in?

a)

A

b)

B

c)

C

d)

D

23.

If car A and car B are both traveling at the same speed, which will require a higher centripetal force?

a)

Car A

b)

Car B

c)

They have the same centripetal force

24.

An engineer is planning a road with a turn. If the speed limit is 20 m/s and the centripetal acceleration cannot exceed 8.5 m/s/s, how big must the radius of the turn be?

a)

2.4 m

b)

47 m

c)

170 m

d)

3400 m

25.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
26.
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
27.
Force of gravity is inversely proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
28.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
29.
Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance? 
a)
F/3
b)
F/2
c)
F/6
d)
F/9
30.

What is the gravitational force between two identical 50,000 kg asteroids whose centers of mass are separated by 1000 m?

a)

2500 N

b)

3.3 x 10-12 N

c)

1.67 x 10-4 N

d)

1.67 x 10-7 N

31.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
32.

According to Newton's law of gravitation, the Earth and the Moon are gravitationally attracted to each other. The more massive Earth attracts the Moon with...

a)

a stronger force than the Moon attracts the Earth.

b)

a weaker force than the Moon attracts the Earth.

c)

the same force as the Moon attracts the Earth.

d)

a force that is sometimes stronger and other times weaker than the Moon attracts the Earth.

33.

The picture shows three objects gravitationally interacting with each other. Which object exerts the greatest force on object B?

a)

Object A

b)

Object C

c)

A and C exert an equal force on B

d)

Cannot be determined

34.

The gravitational force in the previous interaction was 20 N. Determine the gravitational force in the new situation where the second mass is doubled.

a)

10 N

b)

20 N

c)

40 N

d)

80 N

35.
Ocean tides occur mainly because 
a)
water normally runs to the side of Earth away from the sun
b)
of the gravitational pull of the sun on Earth
c)
of different gravitational pulls of the moon on opposite sides of Earth
d)
as Earth rotates it leaves the ocean water somewhat behind it
36.

Which body has the greater effect on Earth's tides?

a)

Sun

b)

Saturn

c)

Moon

d)

Venus

37.
Wha type of tide would this arrangement of earth-moon-sun create?
a)

lower than normal tides

b)

higher than normal tides

c)

normal tides

38.

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

a)

higher tides than normal

b)

lower tides than normal

c)

normal tides

39.
The Moon has a greater influence on Earth tides than the Sun because...
a)
it is smaller than the Sun
b)
it revolves around the Earth
c)
it is closer to the Earth
40.

The international space station is falling toward the Earth, just like the apple falls as it is dropped.

a)

True

b)

False

41.

The ISS doesn't hit the Earth as it falls, it orbits because its tangential velocity is

a)

too small

b)

too large

c)

unknown

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