AP Momentum Review

A train-car of mass M moves at a velocity v at another stationary train-car with mass m. They collide and stick together. What is the new velocity of the system?

• MV/(M + m)
• MV/2
• MV/(M - m)
• (M + m)V/(M - m)

Captain America's shield hits some useless villian in the face and it bounces back. Who experiences the greater impulse, his shield or the useless villian?

• Both are the same
• Shield
• Uesless VIllian
• Cannot be determined

A baseball player catches a ball by moving his hand back in the direction of the ball's motion. Doing this results in a lower force acting on the player's hand. Why?

• Increased time of impact
• Decreased time of impact
• Impact velocity is lessend
• the change in momentum is decreased

Gerald the archery student shoots an arrow at a stationary target. The arrow has mass m, and the target has mass 2m. After the collision, they both travel together at velocity v. What was the initial velocity of the arrow?

• 3v
• 2mv
• 3mv
• v/2

When a bug hits your car, what goes under the greatest change in momentum.

• Both the same
• The bug
• The car
• You in the car

Rank the magnitudes of the changes of momentum in the graphs.

• ΔP_A = ΔP_D > ΔP_B = ΔP_C

• ΔP_A > ΔP_C = ΔP_B > ΔP_D

• ΔP_A > ΔP_B > ΔP_C > ΔP_D

• ΔP_A = ΔP_D > ΔP_B > ΔP_C

What are the two factors that affect the momentum of an object?

• speed and velocity

• time and mass

• distance and displacement

• mass and velocity

Momentum is a ____________________ quantity

• science

• scalar

• vector

• energy

What would happen to the momentum of a toy car if the mass is doubled and the velocity decreases by 1/2?

• It decreases by 1/4

• It decreases by 1/2

• Stays the same

• It is doubled

Momentum is conserved in this type of collision

• elastic
• inelastic
• momentum is conserved in both types of collisions