Unit 2 - 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 is momentum conserved in collisions?

Back

In a closed system, the total momentum before a collision is equal to the total momentum after the collision, provided no external forces act on the system.

Front

What is the formula for calculating momentum?

Back

The formula for momentum is p = mv, where p is momentum, m is mass (in kg), and v is velocity (in m/s).

Front

What is the unit of momentum?

Back

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

Front

If a 1 kg object is moving at 3 m/s, what is its momentum?

Back

3 kg·m/s.

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 conserved.

Front

Calculate the momentum of a 2 kg cart moving at 4 m/s.

Back

8 kg·m/s.

Front

What is the momentum of an object at rest?

Back

The momentum of an object at rest is 0 kg·m/s.

Front

If two carts collide and stick together, what type of collision is it?

Back

It is an inelastic collision.