Free Printable Review of Momentum and Impulse Exam

Worksheets

Review of Momentum and Impulse Exam

Total questions: 27

Worksheet time: 1hrs 21mins

Name

Class

Date

A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?

25 m/s

375 m/s

25 kg m/s

375 kg m/s

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

6030 kg

0.0134 kg

74.4 kg

80 kg

The units for Impulse are

N/s

N·s

m/s

Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds. Which cart experiences the greatest impulse?

Cart B

Cart A

they are the same

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.

Calculate the impulse on the ball.

1 N·s

6 N·s

66 N·s

None of these

The purpose of crumble zones on a car is to

decrease time of impact.

increase force of impact.

increase the time of impact.

decrease the impulse during impact.

The difference between a car hitting a wall vs. a car hitting a hay stack is

the Impulse on the car hitting the wall is greater

the change in momentum of the car hitting the wall is greater

the force on the car hitting the hay stack is greater

the collision time of the car hitting the hay stack is greater

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N·s.

-2.5

-10

-18

-45

In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other. The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s. The carts stick together when they collide. Calculate their final speed.

0.5 m/s

1.0 m/s

0.33 m/s

0.67 m/s

10.

_________________ causes and is equal to a change in momentum

Impulse

Force

Joule

Watt

11.

While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?

2 m/s

8 m/s

-2 m/s

1.5 m/s

12.

Collisions where objects BOUNCE apart.

inelastic collisions

elastic collisions

explosions

none of these

13.

Collision where objects collide, and stick together.

inelastic collision

explosion

elastic collision

none of these

14.

A 10 kg cannonball is loaded into a 1000 kg cannon. When the cannon is fired, the cannonball flies out at a velocity of 100 m/s. What is the recoil velocity of the cannon? (Hint: The cannon is at rest before it is fired)

-1m/s

+1m/s

-100 m/s

-1000 m/s

15.

What is a system called when there is no external force on it?

integral

unified

isolated

closed

16.

What happens when a system winds up being isolated?

The total momentum stays the same during collisions, etc.

The total momentum drops down to zero.

All objects will leave the system.

All energy turns to kinetic energy.

17.

Two balls collide in a perfectly elastic collision. Ball 1 has a mass of 2.3 kg and is moving at 6.8 m/s before the collision. Ball 2 is at rest before the collision. After the collision Ball 1 recoils in the opposite direction at -3.1 m/s. What is the velocity of ball 2 after the collision? (hint: u1 + v1 = u2 + v2)

2.4 m/s

3.7 m/s

3.1 m/s

6.8 m/s

18.

A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s. What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?

1 N

40 N

25 N

5 N

19.

A rock in space breaks into two pieces. One piece has 9 times more mass than the other. The magnitude of the change of MOMENTUM of the smaller piece will be......

9 times smaller than the larger piece

9 times bigger than the larger piece

3 times smaller than the larger piece

The same as the larger piece

20.

A football player is running north down the field, and has a momentum of 120 kg*m/s. He experience a southward impulse of 200 N*s. What is the final momentum of the player

80 kg*m/s north

80 kg*m/s south

320 kg*m/s north

320 kg*m/s south

21.

A 40 kg object has an eastward momentum of 360 kg*m/s. The object encounters a westward impulse of

120 N*s. What is its final velocity?

3 m/s west

6 m/s east

9 m/s west

12 m/s east

22.

A small fish is at rest. A big fish, with 4 times the mass and a speed of 20 cm/s swallows the small fish. What is the new speed of the fish?

20 cm/s

16 cm/s

5 cm/s

25 cm/s

80 cm/s

23.

A rock in space breaks into two pieces. One piece has 9 times more mass than the other. The magnitude of the change of VELOCITY of the smaller piece will be......

9 times smaller than the larger piece

9 times bigger than the larger piece

3 times smaller than the larger piece

The same as the larger piece

24.

In an elastic collision...

only momentum is conserved

only energy is conserved

both momentum and energy are conserved

neither momentum nor energy are conserved

25.

In a completely inelastic collision...

only momentum is conserved

only energy is conserved

both momentum and energy are conserved

neither momentum nor energy are conserved

26.

How many cats can you fit in a small box

Pizza

Australia

The orbit of Jupiter

Mice can't fly planes

27.

One car crashes into another at rest in a perfectly elastic collision. Before the collision the first car is moving at 7.6 m/s. After the collision it recoils in the opposite direction at a velocity of -4.1 m/s. What is the final speed of the second car?

3.5 m/s