Name: Period:
Momentum-Impulse
APlusPhysics: Momentum-Impulse Page 71MOM.A1, MOM.A2, MOM.A3
1. A 1,200-kilogram car traveling at 10 meters per sec-
ond hits a tree and is brought to rest in 0.10 second.
What is the magnitude of the average force acting
on the car to bring it to rest?
1. 1.2 × 102 N
2. 1.2 × 103 N
3. 1.2 × 104 N
4. 1.2 × 105 N
2. A 50-kilogram student threw a 0.40-kilogram ball
with a speed of 20 meters per second. What was the
magnitude of the impulse that the student exerted
on the ball?
1. 8.0 N∙s
2. 78 N∙s
3. 4.0 × 102 N∙s
4. 1.0 × 103 N∙s
3. In the diagram below, a 60-kilogram rollerskater ex-
erts a 10-newton force on a 30-kilogram rollerskater
for 0.20 second.
What is the magnitude of the impulse applied to the
30-kilogram rollerskater?
1. 50 N∙s
2. 2.0 N∙s
3. 6.0 N∙s
4. 12 N∙s
4. Two carts are pushed apart by an expanding spring,
as shown in the diagram below.
If the average force on the 1-kilogram cart is 1
newton, what is the average force on the 2-kilogram
cart?
1. 1 N
2. 0.0 N
3. 0.5 N
4. 4 N
5. What is the speed of a 1.0 × 103-kilogram car that
has a momentum of 2.0 × 104 kilogram∙meters per
second east?
1. 5.0 × 10-2 m/s
2. 2.0 × 101 m/s
3. 1.0 × 104 m/s
4. 2.0 × 107 m/s
6. A motorcycle being driven on a dirt path hits a rock.
It’s 60-kilogram cyclist is projected over the handle-
bars at 20 meters per second into a haystack. if the
cyclist is brought to rest in 0.50 second, the magni-
tude of the average force exerted on the cyclist by the
haystack is
1. 6.0 × 101 N
2. 5.9 × 102 N
3. 1.2 × 103 N
4. 2.4 × 103 N
7. A 70-kilogram hockey player skating east on an ice
rink is hit by a 0.1-kilogram hockey puck moving to-
ward the west. The puck exerts a 50-newton force
toward the west on the player. Determine the mag-
nitude of the force that the player exerts on the puck
during this collision.
8. Which situation will produce the greatest change of
momentum for a 1.0-kilogram cart?
1. accelerating it from rest to 3.0 m/s
2. accelerating it from 2.0 m/s to 4.0 m/s
3. applying a net force of 5.0 N for 2.0 s
4. applying a net force of 10.0 N for 0.5 s
9. A 0.149-kilogram baseball, initially moving at 15 me-
ters per second, is brought to rest in 0.040 second by
a baseball glove on a catcher’s hand. The magnitude
of the average force exerted on the ball by the glove is
1. 2.2 N
2. 2.9 N
3. 17 N
4. 56 N
