Momentum

Select all that is a unit of momentum.

You can find the momentum of an object from ...

• The speed and velocity of an object

• The mass and velocity of an object

• The mass and speed of an object

• The mass and kinetic energy of an object

If a car doubles its velocity, its momentum ...

• stays the same

• increases by a factor of sqrt(2)

• increases by a factor of 2

• increases by a factor of 4

If a car doubles its velocity, its kinetic energy ...

• stays the same

• increases by a factor of sqrt(2)

• increases by a factor of 2

• increases by a factor of 4

• 0

Bill is twice as heavy as Alice, and Alice runs twice as fast as Bill. Compare the momentum between the two.

• Bill has more momentum.

• Alice has more momentum.

• Equal

Bill is twice as heavy as Alice, and Alice runs twice as fast as Bill. Compare the kinetic energy between the two.

• Bill has more kinetic energy.

• Alice has more kinetic energy.

• Equal

What is required to change the momentum of a system of objects? Select all that apply.

• Change in kinetic energy

• Force exchange between the objects

• Non-zero external net force

• Acceleration of the objects

Select all quantities that are conserved during an elastic collision.

• Energy

• Momentum

• Velocity

• Impulse

Select all quantities that are conserved during an inelastic collision.

• Energy

• Momentum

• Velocity

• Impulse