Conservation of Momentum

Front

What does the Law of Conservation of Momentum state?

Back

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

Front

How is momentum calculated?

Back

Momentum (p) is calculated as the product of mass (m) and velocity (v): p = m * v.

Front

What is the unit of momentum?

Back

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

Front

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

Back

It is called an inelastic collision.

Front

What happens to the total momentum in an elastic collision?

Back

The total momentum and total kinetic energy are conserved.

Front

What happens to the total momentum in an inelastic collision?

Back

The total momentum is conserved, but kinetic energy is not conserved.

Front

If a 0.4 kg object rolls at 2 m/s, what is its momentum?

Back

Momentum = 0.4 kg * 2 m/s = 0.8 kg·m/s.

Front

What is the relationship between mass and velocity in terms of momentum?

Back

Momentum is directly proportional to both mass and velocity.

Front

In a collision, if one object has a greater mass, what can be said about its momentum compared to a lighter object moving at the same speed?

Back

The heavier object will have greater momentum.

Front

What is the effect of a force applied over time on momentum?

Back

A force applied over time changes the momentum of an object, known as impulse.