Free Printable Momentum, Impulse, Collisions

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Momentum, Impulse, Collisions

Total questions: 40

Worksheet time: 2hrs 33mins

Name

Class

Date

A 250 kg cart moving at 0.400 m/s has how much momentum?

1000 kg m/s

1 kg m/s

10 kg m/s

100 kg m/s

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

size and shape

mass and speed

mass and veloctiy

mass and energy

A runner has a momentum of 630 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

5670 kg

0.0143 kg

70 kg

80 kg

The equation to calculate momentum is

p=mv

p=1/2mv²

p=mgh

p=mg

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

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

An object with a mass of 2000 kg at rest has what momentum?

2000 kg m/s

0 kg m/s

2000 kg

2000 m/s

When the speed of an object is doubled, its momentum

remains unchanged in accord with the conservation of momentum.

doubles

quadruples

decreases

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball.

55 kg m/s

100 kg m/s

250 kg m/s

500 kg m/s

10.

A 40kg crate has a momentum of 240 kg m/s. What is its velocity?

6 m/s

280 m/s

200 m/s

9600 m/s

11.

If an air bag changes a 60 kg person's speed from 40 m/s to 0 m/s, what impulse must act on the person?

2400 kg m/s

1.5 kg m/s

0.67 kg m/s

1500 kg m/s

12.

A constant force of 5.6 N acts on a 7 kg object for 10 s. What is the change in the object's velocity?

8 m/s

3.92 m/s

12.5 m/s

392 m/s

13.

The velocity of a 975 kg car is changed from 12 m/s to 27 m/s in 15 s by an external, constant force. What is the magnitude of the force?

975 N

14600N

9750 N

975 kg·m/s

14.

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 ______ kg m/s.

-2.5

-10

-18

-45

15.

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

16.

A boy kicks a football with a force of 20 N, the time the force acts for is 0.2 s.

Calculate the impulse on the ball.

100 kg m/s

4 kg m/s

0 kg m/s

None of these

17.

A 40 kilogram mass is moving across a horizontal surface at 5 m/s. What is the magnitude of the net force required to bring the mass to a stop in 8 seconds?

1 N

40 N

25 N

5 N

18.

_________________ causes and is equal to a change in momentum

Impulse

Force

Joule

Watt

19.

Softer landings tend to

increase impact force

increase force

increase collision time

increase change in momentum

20.

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

21.

The total momentum before a collision is _________ the total momentum after a collision.

equal to

less than

more than

It depends on the type of collision

22.

In any collision (crash) the ______ is ALWAYS constant

Total Momentum

total speed

total Velocity

Energy

23.

When two objects collide, the P_before is ____________ the P_after.

more than

less than

equal to

unrelated to

24.

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other...

Skater 1 experiences a greater change in momentum

Skater 2 experiences a greater change in momentum

Both skaters experience the same change in momentum

25.

The Law of Conservation of Momentum states:

The total momentum before a collision is equal to the total momentum after a collision.

The total momentum before a collision is greater than the total momentum after a collision.

The total momentum before a collision is less than the total momentum after a collision.

The total momentum before a collision is not related to the total momentum after a collision.

26.

According to the Law of Conservation of Momentum, when two objects collide:

both objects lose momentum.

both objects gain momentum

momentum is neither lost nor gained.

momentum is always lost or gainer.

27.

Two soccer balls collide. The first soccer ball hits the second soccer ball which was at rest on the ground. What is true of the momentum?

The total momentum stays the same.

The total momentum decreases.

The total momentum increases.

The total momentum equals zero since the second soccer ball was at rest.

28.

What word can best describe the total momentum in a collision?

constant

large

lost

low

29.

Which formula should you use in a collision question?

$p=mv$

$F\Delta t=m\Delta v$

$\left(m_1v_1\right)+\left(m_2v_2\right)_{before}=\left(m_1v_1\right)+\left(m_2v_2\right)_{after}$

$\left(m_1v_1\right)_{bef}+\left(m_1v_1\right)_{aft}=\left(m_2v_2\right)_{bef}+\left(m_2v_2\right)_{aft}$

30.

According to the Law of Conservation of Momentum, when two objects collide:

both objects lose momentum.

both objects gain momentum

momentum is neither lost nor gained.

momentum is always lost or gainer.

31.

The recoil speed of a rifle is much less than the exit velocity of a bullet because...

the rifle experiences a smaller force

the rifle experiences a smaller change in momentum

the rifle has a much greater mass

the rifle does not obey the laws of physics

32.

A grocery shopper tosses a 9.0 kg bag of rice into a stationary 18.0 kg grocery cart. The bag hits the cart with a horizontal speed of 5.5 m/s toward the front of the cart. What is the final speed of the cart and bag?

3.66 m/s

1.83 m/s

1.38 m/s

6.33 m/s

33.

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

34.

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

35.

A block sliding on a frictionless surface runs into a second block of equal mass at rest. After the two collide, they stick together and travel with a velocity...

that is twice the magnitude of the original velocity

that is half the magnitude of the original velocity

more information is needed

36.

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

37.

Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be:

2 m/s

3.4 m/s

4.6 m/s

7.1 m/s

38.

A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg, collides with a smaller box with a mass of 2 kg that is stationary. The boxes stick together. What is the velocity of the two combined masses after collision?

0 m/s

4 m/s

8 m/s

12 m/s

39.

A 3,000 kg truck moving at +10 m/s hits a 1,000 kg parked car which moves off at +15 m/s. What is the velocity of the truck?

10 m/s

0 m/s

5 m/s

2 m/s

40.

A 9 kg blob moving at 5 m/s collides and sticks to a second, stationary blob with a mass of 5 kg. If the two bobs stick together, what will the velocity of the two blobs move at?

3.57 m/s

3.2 m/s

10.0 m/s

9.0 m/s

100 %

Momentum, Impulse, Collisions

Total questions: 40

Worksheet time: 2hrs 33mins

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