Momentum

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 does the speed of an object affect its momentum?

Back

When the speed of an object increases, its momentum also increases. Specifically, if the speed is doubled, the momentum is also doubled.

Front

What is the momentum of a stationary object?

Back

A stationary object has zero momentum because its velocity is zero.

Front

If a car and a bike are compared, which has more momentum if the bike is moving at 15 mph and the car is stopped?

Back

The bike has more momentum because the car's momentum is zero.

Front

What is the formula for calculating momentum?

Back

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

Front

Calculate the momentum of a 0.250 kg cart moving at 0.400 m/s.

Back

The momentum is 0.1 kg-m/s (p = 0.250 kg * 0.400 m/s).

Front

What happens to momentum when an object's mass is increased while keeping velocity constant?

Back

If the mass of an object increases while its velocity remains constant, its momentum increases.

Front

What is the relationship between mass, velocity, and momentum?

Back

Momentum is directly proportional to both mass and velocity; increasing either will increase momentum.

Front

If a runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s, how do you find his mass?

Back

Use the formula p = mv. Rearranging gives m = p/v, so mass = 720 kg m/s / 5 m/s = 144 kg.

Front

True or False: A stationary object has a small amount of momentum.

Back

False. A stationary object has zero momentum.