Momentum and Impulse Concepts

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 momentum change when the speed of an object is doubled?

Back

When the speed of an object is doubled, its momentum also doubles.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before a collision is equal to the total momentum after the collision.

Front

Which has more momentum: a 10 kg mass at rest or a 10 kg mass moving at 1 m/s?

Back

The 10 kg mass moving at 1 m/s has more momentum because momentum is dependent on velocity.

Front

What is the formula for calculating momentum?

Back

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

Front

What happens to momentum in a perfectly elastic collision?

Back

In a perfectly elastic collision, both momentum and kinetic energy are conserved.

Front

What is impulse?

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

How do you calculate the momentum of a car with a mass of 1500 kg moving at 20 m/s?

Back

Momentum = mass × velocity = 1500 kg × 20 m/s = 30,000 kg·m/s.

Front

If two objects collide, what can be said about their momentum before and after the collision?

Back

The total momentum before the collision is equal to the total momentum after the collision.

Front

What is the momentum of a 9300 kg railroad car traveling at 5 m/s?

Back

Momentum = mass × velocity = 9300 kg × 5 m/s = 46,500 kg·m/s.