Free Printable Impulse and momentum.

Worksheets

Impulse and momentum.

Total questions: 43

Worksheet time: 1hrs 28mins

Name

Class

Date

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 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

A person on a stationary skateboard throws a bowling ball with a velocity of 5.0 m/s. What is a possible speed of the person after the throw?

0 m/s

1.5 m/s

5.0 m/s

7.5 m/s

The law of conservation of momentum states that,

p before is less than p after

p before is the same as p after

p before is more than p after

When the speed of an object is doubled, its momentum

remains unchanged in accord with the conservation of momentum.

doubles

quadruples

decreases

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

integral

unified

isolated

closed

The impulse-momentum theorem states that

the impulse on an object is equal to the change in momentum it causes

the force on a moving object is equal to the magnitude of the impulse.

the impulse on an object is greater than the change in momentum it causes

the impulse on an object is less than the change in momentum it causes

The units for Impulse are

N/s

N.s

m/s

An impulse depends on

weight and force

force and time

electric charge and time

none of these

10.

The air bag on a car reduces the force experienced by the driver, by extending the time of impact.

True

False

11.

Impulse is equal to the variables shown in the equation below.

True

False

12.

Momentum is a ____________________ quantity

science

scalar

vector

energy

13.

A(n) _________________ causes and is equal to a change in momentum

impulse

force

joule

watt

14.

15.

What is the unit of momentum ?

16.

Which energy gets passed during collision ?

Potential Energy

Kinetic Energy

Muscular Energy

Mechanical Energy

17.

A body of mass 30kg is moving with speed of 10 m/s.

The momentum of the body is-

300 kg m/s

100 kg m/s

20 kg m/s

18.

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

19.

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

20.

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

21.

Which of the following images has more momentum?

Object A

Object B

They are the same

22.

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

23.

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

33.3 N*s

None of these

24.

In any collision (crash) the ______ is ALWAYS constant

Total Momentum

total speed

total Velocity

Energy

25.

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

26.

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

20000 N

20000 Joules

20000 Kg * m/s

20000 kg * m/s north

27.

A 9 kg blob moving at 5 m/s collides and sticks to a second 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

28.

A 10kg toy truck moves at +5m/s. It collides head-on with a 5kg toy car moving at -10 m/s. What is the total momentum of the system?

0 kgm/s

30 kgm/s

50 kgm/s

10 kgm/s

29.

If you double the velocity of an object, then its momentum will ______________.

will double

will half

will quadruple (x4)

will be quartered (x 1/4)

30.

What object will have more momentum a 1000 kg truck moving 7 m/s or a 500 kg car moving 10 m/s

Truck

Car

31.

A dancer on ice spins faster when she folds here arms. This is due to

Increases in energy and increase in angular momentum

Decrease in friction at the skates

Constant angular momentum and increase in kinetic energy

Increase in energy an decreases in angular momentum

32.

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

33.

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

34.

Two carts of different mass m and M are connected by a spring. They are pushed together such that the spring is compressed.

After the carts are released, the cart of mass m moves with velocity v. The change in the momentum of mass M is

-mv

-Mv

35.

The momentum of a system is conserved if

no external forces act on the system

no friction forces act within the system

no kinetic energy is lost or gained by the system

the forces acting on the system are in equilibrium

36.

The momentum of an object changes by $\Delta p$ in a time $\Delta t$ . What is the impulse acting on the object during this change?

$\Delta p$

$\Delta p\ \Delta t$

$\frac{\Delta p}{\Delta t}$

zero

37.

A rocket is fired vertically into the air. When the rocket reaches its maximum height, the rocket explodes.

What change, if any, occurs in the momentum and in the kinetic energy of the rocket during the explosion?

p increases and KE increases

p increases and KE constant

p constant and KE increases

p constant and KE constant

38.

A baseball bat applies a force of 500 N to a ball for 0.1s. What was the impulse on the ball?

5 N . s

500 N .s

500 N/s

50 N.s

39.

If you push an object with a force of 10 N for 5 seconds , you will change it’s momentum by:

2 N s

50 n s

2 N/s

50 N/s

40.

A boy kicks a football with a force of 20 N in 0.3 s.
Calculate the impulse on the ball.

1 N.s

6 N.s

66 N.s

None of these

41.

A 5 N force is applied to a 3 kg ball to slow it down from 9 m/s to 3 m/s. What is the impulse on the ball?

-2.5 N⋅s

-10 N⋅s

-18 N⋅s

-45 N⋅s

42.

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

43.

The units for Impulse are

N/s

N.s

m/s

100 %

Impulse and momentum.

Total questions: 43

Worksheet time: 1hrs 28mins

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