Free Printable Forces & Motion: Momentum & Collisions

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Forces & Motion: Momentum & Collisions

Total questions: 19

Worksheet time: 38mins

Name

Class

Date

Cars have crumple zones at the front of the vehicle which crumple upon impact. Explain how this feature can protect the passengers if the car has an accident.

4 lines

Explain how airbags and seatbelts can increase the chances of a driver surviving a car crash.

4 lines

Why do the teenagers not have the same momentum?

4 lines

The momentum of an object depends upon the object's ___________&_____________.

size and shape

mass and speed

mass and veloctiy

mass and energy

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

car

bike

they are equal

cannot determine using the info provided

Determine the momentum of 1000-kg car moving southward at 20 m/s.........

20000 N

20000 Joules

20000 Kg * m/s south

10000 kg * m/s south

A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision. What is the velocity of the second ball after the collision?

5 m/s

2.5 m/s

10 m/s

7.5 m/s

A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?

18.6 m/s

9.3 m/s

7.5 m/s

1.86 m/s

When the speed of an object is doubled, its momentum

remains unchanged in accord with the conservation of momentum.

doubles

quadruples

decreases

10.

Which object listed below has the greatest momentum?

A 0.05 kg object rolling at 0.2 m/s.

A 0.15 kg object rolling at 2 m/s.

A 0.15 kg object rolling at 1 m/s

A 0.4 kg object rolling at 2 m/s.

11.

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

0.1 kg-m/s

1 kg-m/s

10 kg-m/s

100 kg-m/s

12.

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

74.4 kg

6030 kg

0.0134 kg

80 kg

13.

A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?

8 m/s

32 m/s

0.125 m/s

18 m/s

14.

Which of the following images has more momentum?

Object A

Object B

They are the same

15.

In order for an object to have momentum it must be ________

moving

motionless

alive

asleep

16.

Calculate the velocity of the van after the collision.

(a)

17.

A 65kg stuntperson jumps from a balcony onto an inflated airbag. Her speed is 14 m/s just before she hits the airbag. She is stopped in a period of 1.3 seconds (after which her momentum is zero).

Calculate the momentum of the stuntperson just before she hits the airbag.

(a)

18.

A 65kg stuntperson jumps from a balcony onto an inflated airbag. Her speed is 14 m/s just before she hits the airbag. She is stopped in a period of 1.3 seconds (after which her momentum is zero).

Calculate the average force acting on her as she is stopped by the airbag.

(a)

19.

A boy with a mass of 46 kg jumps onto a stationary skateboard which weighs 2.1 kg. If he lands on the skateboard with a horizontal velocity of 5.2 m/s, calculate the combined velocity of the boy and the skateboard just after he lands on it.

Give your answer to two decimal places.

(a)

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Forces & Motion: Momentum & Collisions

Total questions: 19

Worksheet time: 38mins

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