WorksheetsUnit 4 Test Review
Total questions: 18
Worksheet time: 9mins
How do airbags reduce your chance of getting hurt during an accident?
Airbags increase momentum before collision
Airbags reduce momentum during a collision
Airbags increase the time it takes a person to stop moving
Airbags cause friction which reduced the chance of getting hurt
When comparing the momentum of two moving objects, which of the following is correct?
The object with the higher velocity will have less momentum if the masses are equal.
The more massive object will have less momentum if its velocity is greater.
The less massive object will have less momentum if the velocities are the same.
The more massive object will have less momentum if the velocities are the same.
The impulse experienced by a body is equivalent to the body’s change in
velocity
position
force
momentum
Two objects stick together and move with a common velocity after colliding. Identify the type of interaction.
elastic
inelastic
explosive
implosive
Two objects move separately after colliding, and the total momentum remains constant. Identify the type of interaction.
elastic
inelastic
explosive
implosive
A child with a mass of 23 kg rides a bike with a mass of 5.5 kg at a velocity of 4.5 m/s to the south. Compare the momentum of the child with the momentum of the bike.
The child has a greater momentum than the bike.
The bike has a greater momentum than the child.
Neither the child nor the bike has momentum.
Both the child and the bike have the same momentum.
A soccer ball collides with another soccer ball at rest. The total momentum of the soccer balls
remains constant
is zero
increases
decreases
What velocity must a 1000 kg car have in order to have the same momentum as a 2000 kg truck traveling at a velocity of 15 m/s to the west?
30 m/s East
30 m/s West
60 m/s West
60 m/s East
A 0.15-kilogram baseball and a 7.25-kilogram bowling ball are both rolling along at 3 m/sec. Which object is easier to stop and why?
The bowling ball because it has less inertia
The baseball because it has more inertia
The bowling ball because it has more inertia
The baseball because it has less inertia
Compare the inertia and momentum of a 0.15 kilogram baseball moving at 50 m/sec with the inertia and momentum of a 7.25 kilogram bowling ball moving at 1 m/sec.
The bowling ball has both more inertia and more momentum.
The baseball has more inertia, but the bowling ball has more momentum.
The baseball has both more inertia and more momentum.
The bowling ball has both more inertia but the baseball has more momentum.
A little moth is hit by a garbage truck on the highway. Who experiences the greater impulse?
the garbage truck
they experience the same impulse
the moth
A little moth is hit by a garbage truck on the highway. The force of the impact is
the same for both
greater on the garbage truck
greater on the moth
A little moth is hit by a garbage truck on the highway. Who experiences the greater acceleration?
the garbage truck
the moth
they experience the same acceleration
A standard cue ball has a mass of 10 kg. If the cue ball is rolling at 20 m/s across the pool table, what is its momentum?
10 Kg*m/s
200 Kg*m/s
0.5 Kg*m/s
30 Kg*m/s
A 50 kg ball has a change of momentum equaling 40 N•s when colliding with a wall for
5 s. What is the average force on the ball?
10,000 N
8 N
200 N
250 N
A 1000 kg car speeds up from 5 m/s to 25 m/s. What is the impulse on the car?
50 N*s
20,000 N*s
25,000 N*s
5,000 N*s
What is the change in momentum of an object?
Final - initial momentum
Initial - Final momentum
Final + Initial momentum
A 80 kg cart has a momentum of 48 kg•m/s. What is the cart’s velocity?
0.60 m/s
1.67 m/s
128 m/s
32 m/s
