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

What is the unit of momentum?

Back

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

Front

How does mass affect momentum?

Back

The greater the mass of an object, the greater its momentum, assuming velocity remains constant.

Front

How does velocity affect momentum?

Back

The greater the velocity of an object, the greater its momentum, assuming mass remains constant.

Front

What is the law of conservation of momentum?

Back

In a closed system, the total momentum before a collision is equal to the total momentum after the collision.

Front

What happens to momentum in an elastic collision?

Back

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

Front

What happens to momentum in an inelastic collision?

Back

In an inelastic collision, momentum is conserved, but kinetic energy is not.

Front

Calculate the momentum of a 1500 kg car moving at 25 m/s.

Back

Momentum = 1500 kg * 25 m/s = 37500 kg·m/s.

Front

If a 2000 kg truck is moving at 10 m/s, what is its momentum?

Back

Momentum = 2000 kg * 10 m/s = 20000 kg·m/s.

Front

What is the momentum of an object at rest?

Back

The momentum of an object at rest is zero, as its velocity is zero.