Momentum #1, 22-23

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 momentum?

Back

Momentum is a measure of the motion of an object and is the product of its mass and velocity.

Front

How does mass affect momentum?

Back

Momentum is directly proportional to mass; as mass increases, momentum increases if velocity remains constant.

Front

How does velocity affect momentum?

Back

Momentum is directly proportional to velocity; as velocity increases, momentum increases if mass remains constant.

Front

What is the unit of momentum?

Back

The unit of momentum is kilogram meter per second (kg·m/s).

Front

If an object has a mass of 2 kg and is moving at a velocity of 3 m/s, what is its momentum?

Back

The momentum is 6 kg·m/s (p = mv = 2 kg * 3 m/s).

Front

What is the relationship between net force and momentum?

Back

Net force is the rate of change of momentum; F = dp/dt, where F is force and p is momentum.

Front

What does it mean for mass and velocity to be directly proportional to momentum?

Back

It means that if either mass or velocity increases, momentum will also increase, assuming the other variable remains constant.

Front

What is the momentum of a 1000-kg car moving at 20 m/s?

Back

The momentum is 20000 kg·m/s north (p = mv = 1000 kg * 20 m/s).

Front

Which has more momentum: a stationary elephant or a moving car?

Back

The moving car has more momentum; a stationary object has zero momentum.