Momentum and Impulse Review HPhysics

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

How is impulse defined?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, calculated as Impulse = Force × Time.

Front

What is the principle of conservation of momentum?

Back

The principle states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

Front

Calculate the momentum of a 20,000 kg freight car moving at 15 m/s.

Back

300,000 kg*m/s.

Front

What two factors does momentum depend on?

Back

Momentum depends on mass and velocity.

Front

What happens to the collision time when softer landings are involved?

Back

Softer landings increase collision time.

Front

If a large box (4 kg) moving at 12 m/s collides with a stationary smaller box (2 kg) and they stick together, what is their combined velocity?

Back

8 m/s.

Front

What is the total momentum of a system with a 10 kg toy truck moving at 5 m/s East and a 5 kg toy car moving at 10 m/s West?

Back

0 kg*m/s.

Front

What is the formula for calculating momentum?

Back

p = mv, where p is momentum, m is mass, and v is velocity.

Front

What is the effect of increasing mass on momentum, assuming velocity remains constant?

Back

Increasing mass will increase momentum.