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Momentum & Impulse

Total questions: 20

Worksheet time: 8mins

Name
Class
Date
1.

Momentum is measured in

a)

Newtons

b)

Joules

c)

Watts

d)

kg•m/s

2.

True or False? Momentum is a vector.

a)

true

b)

false

3.

A 4 kg ball rolls at 10 m/s. Its momentum is:

a)

2.5 kg•m/s

b)

4 kg•m/s

c)

10 kg•m/s

d)

40 kg•m/s

4.

Which has more momentum?

a)

a 2 kg object moving at 15 m/s

b)

a 5 kg object moving at 5 m/s

c)

a 10 kg object moving at 5 m/s

d)

a 1 kg object moving at 40 m/s

5.

A 4 kg ball experiences a 10 N force acting for 2 sec. The impulse on the ball is

a)

5 kg•m/s

b)

8 kg•m/s

c)

20 kg•m/s

d)

40 kg•m/s

6.

A 4 kg ball experiences a 10 N force acting for 2 sec. Its momentum will change by

a)

5 kg•m/s

b)

8 kg•m/s

c)

20 kg•m/s

d)

40 kg•m/s

7.

______ forces change momentum

a)

Nonconservative

b)

External

c)

Conservative

d)

Internal

8.

If only conservative forces act on a system,

a)

mechanical energy is conserved.

b)

momentum is conserved.

c)

mass is conserved.

d)

charge is conserved.

9.

The white pool ball, hits the 8-ball (at rest). If the white ball stops, the 8-ball ends up

a)

stopped.

b)

moving slower than the initial speed of the white ball.

c)

moving just as fast as the initial speed of the white ball.

d)

moving faster than the initial speed of the white ball.

10.

Momentum conservation of an object is a direct consequence of

a)

Newton's first law.

b)

Newton's second law.

c)

Newton's third law.

d)

Newton's law of universal gravitation.

11.

Momentum conservation of a system is a direct consequence of

a)

Newton's first law.

b)

Newton's second law.

c)

Newton's third law.

d)

Newton's law of universal gravitation.

12.

Acting in isolation on an object, gravity will NOT change which of the following?

a)

kinetic energy

b)

gravitational potential energy

c)

mechanical energy

d)

momentum

13.

True or False? The kinetic energy of a 1 kg ball moving at 2 m/s is equal to its momentum.

a)

true

b)

false

14.

Which one does NOT belong?

a)

kinetic

b)

momentum

c)

potential

d)

thermal

15.

A bug splatters on the windshield of your moving car. Which experiences the larger force?

a)

bug

b)

car

c)

neither

16.

A bug splatters on the windshield of your moving car. Which experiences the larger change in momentum?

a)

bug

b)

car

c)

neither

17.

A bug splatters on the windshield of your moving car. Which experiences the larger acceleration?

a)

bug

b)

car

c)

neither

18.

Momentum is

a)

a form of potential energy.

b)

a form of kinetic energy.

c)

a form of thermal energy.

d)

unrelated to energy.

19.

When you drop your phone, the earth rises up to meet it.

a)

true

b)

false - the earth does not move

c)

need more information

d)

false - the earth moves out of the way since I have a Nokia

20.

When two unequal mass objects collide ...

a)

the larger object experiences the larger momentum change.

b)

the smaller object experiences the larger momentum change.

c)

the objects trade momentum.

d)

both objects experience the same change in momentum.