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Review for Uniformed Circular Motion and Universal Gravitation

Total questions: 24

Worksheet time: 19mins

Name
Class
Date
1.
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
2.
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
3.

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

4.

What's the acceleration of gravity of a planet with a mass of 1 x 1022 kg and a radius of 5x105 meters?

a)

.267 m/s2

b)

2.67 m/s2

c)

26.7 m/s2

d)

267 m/s2

5.
Which of the following depict the speed of the blowing ball?
a)
A
b)
B
c)
C
d)
D
6.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
7.
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
8.
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
9.
If I double the distance between two objects, what happens to their gravitational Force?
a)
4x bigger
b)
4x smaller
c)
2x bigger
d)
2x smaller
10.

Which of the following locations would the gravitation field be the 2nd strongest?

a)

A

b)

B

c)

C

d)

D

e)

E

11.

The period of a pendulum is 10 s. What is its frequency?

a)

10 Hz

b)

1 Hz

c)

0.5 Hz

d)

0.1 Hz

12.

A pendulum makes 33 complete back and forth cycles of vibration in 11 seconds. Its period is

a)

3.0 s

b)

3.0 Hz

c)

0.33 s

d)

0.33 Hz

13.
A pendulum makes 33 complete back and forth cycles of vibration in 11 seconds.  It's frequency is:
a)
3.0 s
b)
3.0 Hz
c)
0.33 s
d)
0.33 Hz
14.

The frequency of a wave is 10 Hz. What is the period of the wave?

a)

10 sec

b)

1/10 sec

c)

0.5 Hz

d)

5 sec

15.

The period of a wave is 4 seconds. What is the frequency?

a)

1/4 Hz

b)

1/4 sec

c)

4 Hz

d)

2 Hz

16.

An object travels in a circular path of radius r at a constant speed v. What happens to the object’s acceleration if the speed is tripled and the radius stays unchanged?

a)

It Triples

b)

It increase nine times

c)

It decreases to a third

d)

It decreases to a ninth

17.

Define Period

a)

How often an event occurs

b)

The opposite of something else

c)

How long it takes to complete one event

d)

Movement of an object along a circular path

18.

Define Uniformed Circular Motion

a)

Movement of an object along a circular path

b)

The normal force exerted on you

c)

Motion of an object moving in a circle at constant speed

d)

The velocity moving perpendicular to acceleration

19.

Define Apparent Weight

a)

The velocity moving perpendicular to acceleration

b)

The distance from the sun to the earth

c)

The opposite of something else

d)

The normal force exerted on you

20.

Saturn would have an orbital Period of ____ if the average distance from the sun is 9.5 AU

a)

29 years

b)

4 years

c)

80 years

d)

15 years

21.

Neptune would have an average distance from the sun orbital period of ____ if it has an orbital period of 165 years

a)

15 AU

b)

10 AU

c)

30 AU

d)

45 AU

22.
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
23.
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
24.

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

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