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Momentum and Impulse Test Review

Total questions: 72

Worksheet time: 7hrs 5mins

Name
Class
Date
1.

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

a)

size and shape

b)

mass and speed

c)

mass and veloctiy

d)

mass and energy

2.

Which equation is used to calculate momentum?

a)

p = mv

b)

p = m/v

c)

p = m + v

d)

p = v / m

3.
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?
a)
25 m/s
b)
375 m/s
c)
25 kg m/s
d)
375 kg m/s
4.

Which object has more momentum?

a)

10kg mass at rest

b)

10 kg mass moving at 1 m/s

c)

10 kg mass moving at 2 m/s

d)

10 kg mass moving at 3 m/s

5.

An object that has momentum can be described as _________

a)

changing its velocity

b)

moving fast

c)

resisting changes in its state of motion

d)

having its mass in motion

e)

encountering a net force

6.

Which one of these objects has the greater amount of momentum?

a)

A turtle that slowly crosses a road

b)

A parked car

c)

A stop sign

7.

Which one of the following units represents the standard metric units of momentum

a)

Newtons * meter / second

b)

Kilograms * meter / second2

c)

meter / second

d)

Kilograms * meter / second

8.

Which one of the following units represents the standard metric units of impulse

a)

Kilograms * meter / second2

b)

Newton * meter

c)

meter / second2

d)

Newton * second

9.

During a collision. an object experiences an impulse. How can this impulse be calculated?

a)

Multiplying force by time

b)

Multiplying mass by velocity

c)

Dividing velocity by time

d)

Multiplying mass by acceleration

10.

During a collision. an object experiences an impulse. The impulse causes and is equal to the _____ of the object

a)

energy change

b)

kinetic energy change

c)

force

d)

momentum

e)

momentum change

11.

When a cannon fires a cannon ball, it recoils backwards. This occurs because of...

a)

Energy in the system is conserved

b)

Energy in the system is increased

c)

Momentum in the system is conserved

d)

Energy in the system is not conserved

12.

A freight car of mass 20,000kg moves along a track at 15 m/s. What is the momentum of the car?

a)

30,000 kg*m/s

b)

3,000 kg*m/s

c)

300,000 kg*m/s

d)

3,000,000 kg*m/s

13.

A 2kg object moving at 5 m/s encounters a 30 N resistive force over a duration of 0.10 seconds. The impulse experienced by this object is _____

a)

0.30 N*s

b)

2 N*s

c)

2.5 N*s

d)

3 N*s

e)

7 N*s

14.

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

a)

80 kg*m/s north

b)

80 kg*m/s south

c)

320 kg*m/s north

d)

320 kg*m/s south

15.

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?

a)

3 m/s west

b)

6 m/s east

c)

9 m/s west

d)

12 m/s east

16.

An egg landing on a soft surface will remain intact. The surface increases the _____ and decreases the _____ during the impact

a)

impulse, time

b)

impulse, force

c)

force, time

d)

time, force

17.

A 5kg ball has a momentum of 30 kg*m/s. What is the speed of the ball

a)

150 m/s

b)

35 m/s

c)

6 m/s

d)

5 m/s

18.

Padded dashboards in cars are safer in accidents than non padded ones because the passenger hitting the dash has...

a)

a) Increased time of impact

b)

b) decreased impulse

c)

c) decreased impact force

d)

d) a and b

e)

e) a and c

19.

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?

a)

20 cm/s

b)

16 cm/s

c)

5 cm/s

d)

25 cm/s

e)

80 cm/s

20.

Before objects A and B collide, A has a momentum of 26 kg*m/s and B has a momentum of -14 kg*m/s. After the collision, A has a momentum of 8 kg*m/s. B has a momentum of..

a)

2 kg*m/s

b)

4 kg*m/s

c)

6 kg*m/s

d)

12 kg*m/s

e)

32 kg*m/s

21.

A 10 kg object moves at 2 m/s to the right and collides with a 4 kg object moving at 5 m/s to the left. The total momentum is_____

a)

20 kg*m/s

b)

40 kg*m/s

c)

10 kg*m/s

d)

30 kg*m/s

e)

0 kg*m/s

22.

In an elastic collision...

a)

objects bounce off each other

b)

objects stick together

c)

objects stick together for a while then separate

d)

one object flips over the other

23.

In an elastic collision...

a)

only momentum is conserved

b)

only energy is conserved

c)

both momentum and energy are conserved

d)

neither momentum nor energy are conserved

24.

In a completely inelastic collision...

a)

objects bounce off each other

b)

objects stick together

c)

objects stick together for a while then separate

d)

one object flips over the other

25.

In a completely inelastic collision...

a)

only momentum is conserved

b)

only energy is conserved

c)

both momentum and energy are conserved

d)

neither momentum nor energy are conserved

26.

​ (a)   = mass x velocity

Choose from the below words
momentum
energy
acceleration
gravity
work
force
27.

A soccer ball is moving towards Elena at a speed of 13 m/s. She kicks it in the opposite direction at a speed of 26 m/s. If the ball weighs 0.9 kg, what was the magnitude of the impulse delivered by her foot to the soccer ball?

a)

35.1 N*s

b)

209 N*s

c)

11.9 N*s

d)

92.5 N*s

28.

How much momentum does a soccer ball have if it has a mass of 0.7 kg and is moving at a speed of 33 m/s?

a)

23.1 kgm/s

b)

27.3 kgm/s

c)

2.1 kgm/s

d)

9.3 kgm/s

29.

 If a frisbee with a mass of 0.2 kg is traveling through the air at a speed of 77 m/s, how much momentum does it have?

a)

15.4 kg*m/s

b)

3.4 kg*m/s

c)

14.4 kg*m/s

d)

0.4 kg*m/s

30.

Your buddy Rich throws you a frisbee. It goes over your head and lands 120 m away. If the frisbee was in the air for 5 seconds after Rich threw it, what was its average velocity?

a)

24 m/s

b)

600 m/s

c)

325 m/s

d)

115 m/s

31.

A batter in a softball game hits a fly ball that is caught by the centerfielder.  The ball  weighs 0.7 kilograms, and the player's glove applied a 950 N force over 0.2 seconds to catch the ball. What was the ball's velocity while it was in the air?

a)

271.4 m/s

b)

111.9 m/s

c)

150.0 m/s

d)

8309.6 m/s

32.

DeAngelo throws a rock that flies through the air at a speed of 90 m/s. If it has a momentum of 810 kg*m/s, what is the rock’s mass?

a)

9 kg

b)

1270 kg

c)

18 kg

d)

27 kg

33.

A yellow Ferrari traveling at 150 m/s veers off the road and crashes into a large oak tree, coming to a complete stop in 0.25 seconds. If the Ferrari has a mass of 750 kg, how much force was delivered by the oak tree?

a)

450,000 N

b)

5750 N

c)

175,250 N

d)

360,000 N

34.

Tucker is driving a 1100 kg truck at a speed of 40 m/s. He then applies 3000 N of force to the brakes for 2 seconds. What is his speed now?

a)

34.5 m/s

b)

0 m/s

c)

27.5 m/s

d)

38 m/s

35.

Regina hits a 0.3 kg tennis ball against a wall during PE. The ball has a velocity of 15 m/s before it hits the wall, and a velocity of 9 m/s (in the opposite direction) after it bounces off the wall.  What impulse was delivered to the ball by the wall?

a)

7.2 N*s

b)

27.0 N*s

c)

550.2 N*s

d)

3.6 N*s

36.

A 0.6 kg football is flying towards you with a velocity of 50 m/s. How much force is required to catch the ball in 0.5 seconds?

a)

60 N

b)

30 N

c)

300 N

d)

360 N

37.

A 0.6 kg football is flying towards you with a velocity of 50 m/s. How much force is required to catch the ball in 1.0 seconds?

a)

60 N

b)

30 N

c)

300 N

d)

360 N

38.

True or False:

Momentum and Impulse have the same units: kg*m/s

a)

True

b)

False

39.

Your buddy Rich throws you a frisbee. It flies toward you at a speed of 22 m/s. If you use 8.8 N of force to complete the catch over a time interval of 1.0 seconds, what is the frisbee's mass?

a)

0.4 kg

b)

0.05 kg

c)

2.2 kg

d)

4.4 kg

40.

How much force is required to stop a moving object with 400 kg*m/s of momentum in 1 second?

a)

400 N

b)

80 N

c)

200 N

d)

0.5 N

41.

A purple ball and a gold ball each weigh 9.5 lbs. If the purple ball is moving at a velocity of 20 m/s, and the gold ball is moving at a velocity of 100 m/s, which ball has more momentum?

a)

purple

b)

gold

c)

their momentums are equal

42.

You have a 5 kg purple ball and a 1 kg gold ball. If the purple ball is moving at a velocity of 20 m/s, and the gold ball is moving at a velocity of 100 m/s, which ball has more momentum?

a)

purple

b)

gold

c)

their momentums are equal

43.

You have a 5 kg purple ball and a 20 kg gold ball. If the purple ball is moving at a velocity of 20 m/s, and the gold ball is moving at a velocity of 10 m/s, which ball has more momentum?

a)

purple

b)

gold

c)

their momentums are equal

44.

You have a 3 kg purple ball and an 8 kg gold ball. If the purple ball is moving at a velocity of 90 m/s, and the gold ball is moving at a velocity of 33 m/s, which ball has more momentum?

a)

purple

b)

gold

c)

their momentums are equal

45.
Kiki accidentally nudges a glass tumbler with her elbow and it falls toward a hard, ceramic tile floor. As a soccer player, Kiki reacts by catching the glass with her foot and lowering it to the floor, preventing the glass from breaking. Her action prevents the breakage because: 
a)
the change in momentum is smaller when Kiki catches and lowers the glass to the floor
b)
the impulse is smaller when Kiki catches the glass and lowers it to the floor
c)
the time interval stopping is greater when Kiki catches the glass with her foot
d)
a larger force is exerted by Kiki's foot to stop the glass in time
46.
A 0.15-kilogram baseball thrown at a speed of 50 meters per second and a 7.25-kilogram bowling ball rolling at 2 meters per second are both stopped in 0.2 seconds. 
a)
The baseball is stopped with less force because it has less inertia. 
b)
The baseball is stopped with less force because it has less momentum. 
c)
The bowling ball is stopped with less force because it has less momentum.
d)
The bowling ball is stopped with less force because it has less inertia.
47.
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? 
a)
5 m/s
b)
2.5 m/s
c)
10 m/s
d)
7.5 m/s
48.
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?
a)
18.6 m/s
b)
9.3 m/s
c)
7.5 m/s
d)
1.86 m/s
49.
A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?
a)
0 kgm/s
b)
30 kgm/s
c)
50 kgm/s
d)
10 kgm/s
50.
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?
a)
0 m/s
b)
4 m/s
c)
8 m/s
d)
12 m/s
51.
A 65 kg ice skater standing on frictionless ice throws a 0.15 kg snowball horizontally at a speed of 32.0 m/s. At what velocity does the skater move backward?
a)
- 0.07 m/s
b)
- 0.30 m/s 
c)
- 0.15 m/s 
d)
- 1.20 m/s
52.
A bowling ball with a mass of 7.0 kg strikes a pin that has a mass of 2.0 kg. The pin flies forward with a velocity of 6.0 m/s, and the ball continues forward at 4.0 m/s. What was the original velocity of the ball?
a)
3.3 m/s
b)
4.0 m/s
c)
5.7 m/s
d)
6.6 m/s
53.
A 9300 kg railroad car traveling at a velocity of 10 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?
a)
18.6 m/s
b)
14.8 m/s
c)
15 m/s
d)
12.4 m/s
54.
Both students experience the same ____
a)
force of impact
b)
time of impact
c)
change in momentum
d)
all of the above
55.
While playing basketball in PE class, Logan lost his balance after making a lay-up and colliding with the padded wall behind the basket. His 70 kg body decelerated from 7 m/s to 0 m/s in 0.2 seconds. Determine the force acting on Logan's body.
a)
0 N
b)
70 N
c)
1500 N
d)
2450 N
56.
A force of 300 N is exerted on a baseball by the bat for 1 s. What is the impulse of the baseball? 
a)
3 N*s
b)
30 N*s
c)
300 N*s
d)
3000 N*s
57.

Which of the following has the MOST momentum?

a)

rolling ping-pong ball

b)

rolling bowling ball

c)

rolling soccer ball

d)

rolling basketball

58.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
59.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
60.
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?
a)
3.57 m/s
b)
3.2 m/s
c)
10.0  m/s
d)
9.0  m/s
61.
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?
a)
18.6 m/s
b)
9.3 m/s
c)
7.5 m/s
d)
1.86 m/s
62.
Two blocks begin at rest with an initial momentum of zero. After the spring is sprung, the two blocks move in opposite directions. What is the total final momentum? 
a)
zero
b)
a positive value in the direction of the heavier block
c)
a positive value in the direction of the faster block
d)
more information is needed
63.
Parkour Peter bends his knees upon landing in order to ____
a)
reduce his change in momentum
b)
increase his change in momentum
c)
increasing his landing time
d)
increasing his landing force
64.
Both students experience the same ____
a)
force of impact
b)
time of impact
c)
change in momentum
d)
all of the above
65.

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?

a)

-2.5 N⋅s

b)

-10 N⋅s

c)

-18 N⋅s

d)

-45 N⋅s

66.

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.

a)

1 N⋅s

b)

6 N⋅s

c)

33.3 N⋅s

67.

A golf club hits a golf ball. The golf ball's change in momentum is __________________ the golf club's.

a)

greater than

b)

less than

c)

equal to

68.

A 1 kg ball rolling 4 m/s runs into another 2 kg ball which is not moving. How much total momentum does the balls have after the collision?

a)

4

b)

12

c)

6

d)

0

69.

A boy is standing on a skateboard. Before he throws the ball, the skateboard is not moving. After he throws the ball the skateboard will ...

a)

remain still.

b)

move forward slower than the ball.

c)

move backward faster than the ball.

d)

move backwards slower than the ball.

70.

The two blocks shown in the picture are about to collide and stick together. Which direction will they go after the collision?

a)

To the left

b)

To the right

c)

They will both stop in the middle

71.

The two blocks shown in the picture are about to collide and stick together. What is the momentum of this system?

a)

10

b)

6

c)

18

d)

3

72.

The two blocks shown in the picture are about to collide and stick together. How fast will they go after the collision?

a)

More than 4 m/s

b)

Less than 4 m/s

c)

4 m/s

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