Transcript Momentum Practice Multiple Choice

Momentum Practice Problems
Physics Chapter 8
#1
A sports car and a semi truck are involved in a
head on collision. Which vehicle experiences
the greater impulse?
A.
B.
C.
D.
The sports car
The semi truck
Both vehicles experience the same impulse
Not enough information to know
#1
A sports car and a semi truck are involved in a
head on collision. Which vehicle experiences
the greater impulse?
A.
B.
C.
D.
The sports car
The semi truck
Both vehicles experience the same impulse
Not enough information to know
#2
A dropped egg hits the ground and
experiences a certain force and a certain
impulse. If that same egg is dropped into a
padded container is experiences _______
force and ______ impulse.
A.
B.
C.
D.
The same; the same
Less; the same
The same; less
Less; less
#2
A dropped egg hits the ground and
experiences a certain force and a certain
impulse. If that same egg is dropped into a
padded container is experiences _______
force and ______ impulse.
A.
B.
C.
D.
The same; the same
Less; the same
The same; less
Less; less
#3
When comparing the momentum of two moving
objects, which of the following is correct?
a. The object with the higher velocity will have less
momentum if the masses are equal.
b. The more massive object will have less
momentum if its velocity is greater.
c. The less massive object will have less momentum
if the velocities are the same.
d. The more massive object will have less
momentum if the velocities are the same.
#3
When comparing the momentum of two moving
objects, which of the following is correct?
a. The object with the higher velocity will have less
momentum if the masses are equal.
b. The more massive object will have less
momentum if its velocity is greater.
c. The less massive object will have less momentum
if the velocities are the same.
d. The more massive object will have less
momentum if the velocities are the same.
#4
The change in an object’s momentum is equal to
a. the product of the mass of the object and the
time interval.
b. the product of the force applied to the object
and the time interval.
c. the time interval divided by the net external
force.
d. the net external force divided by the time
interval.
#4
The change in an object’s momentum is equal to
a. the product of the mass of the object and the
time interval.
b. the product of the force applied to the object
and the time interval.
c. the time interval divided by the net external
force.
d. the net external force divided by the time
interval.
#5
A force is applied to stop a moving shopping
cart. Increasing the time interval over which
the force is applied
a. requires a greater force.
b. has no effect on the force needed.
c. requires a smaller force.
d. requires the same force.
#5
A force is applied to stop a moving shopping
cart. Increasing the time interval over which
the force is applied
a. requires a greater force.
b. has no effect on the force needed.
c. requires a smaller force.
d. requires the same force.
#6
A moderate force will break an egg. However,
an egg dropped on the road usually breaks,
while one dropped on the grass usually does
not break because for the egg dropped on the
grass,
a. the change in momentum is greater.
b. the change in momentum is less.
c. the time interval for stopping is greater.
d. the time interval for stopping is less.
#6
A moderate force will break an egg. However,
an egg dropped on the road usually breaks,
while one dropped on the grass usually does
not break because for the egg dropped on the
grass,
a. the change in momentum is greater.
b. the change in momentum is less.
c. the time interval for stopping is greater.
d. the time interval for stopping is less.
#7
Two skaters stand facing each other. One skater’s
mass is 60 kg, and the other’s mass is 72 kg. If the
skaters push away from each other without
spinning,
a. the 60 kg skater travels with a lower momentum.
b. their momenta are equal in magnitude but
opposite in direction.
c. their total momentum doubles.
d. their total momentum decreases.
#7
Two skaters stand facing each other. One skater’s
mass is 60 kg, and the other’s mass is 72 kg. If the
skaters push away from each other without
spinning,
a. the 60 kg skater travels with a lower momentum.
b. their momenta are equal in magnitude but
opposite in direction.
c. their total momentum doubles.
d. their total momentum decreases.
#8
A soccer ball collides with another soccer ball
at rest. The total momentum of the balls
a. is zero.
b. increases.
c. remains constant.
d. decreases.
#8
A soccer ball collides with another soccer ball
at rest. The total momentum of the balls
a. is zero.
b. increases.
c. remains constant.
d. decreases.
#9
The law of conservation of momentum states that
a. the total initial momentum of all objects interacting
with one another usually equals the total final
momentum.
b. the total initial momentum of all objects interacting
with one another does not equal the total final
momentum.
c. the total momentum of all objects interacting with one
another is zero.
d. the total momentum of all objects interacting with one
another remains constant assuming no external
influences
#9
The law of conservation of momentum states that
a. the total initial momentum of all objects interacting
with one another usually equals the total final
momentum.
b. the total initial momentum of all objects interacting
with one another does not equal the total final
momentum.
c. the total momentum of all objects interacting with one
another is zero.
d. the total momentum of all objects interacting with one
another remains constant assuming no external
influences
#10
A billiard ball collides with a stationary
identical billiard ball in an elastic head-on
collision. After the collision, which is true of
the first ball?
a. It maintains its initial velocity.
b. It has one-half its initial velocity.
c. It comes to rest.
d. It moves in the opposite direction.
#10
A billiard ball collides with a stationary
identical billiard ball in an elastic head-on
collision. After the collision, which is true of
the first ball?
a. It maintains its initial velocity.
b. It has one-half its initial velocity.
c. It comes to rest.
d. It moves in the opposite direction.
#11
• Describe the function and physics principles
behind an automobile's airbag system. Use
the terms force, time, impulse, and change in
momentum in your answer.
#11
• Describe the function and physics principles
behind an automobile's airbag system. Use the
terms force, time, impulse, and change in
momentum in your answer.
• By extending the impact time, an airbag reduces
the impact force. Because the passenger
undergoes the same change in velocity in both an
air bag stop and a sudden stop, the change in
momentum (and thus impulse) is the same for
both collisions.