# MomentumBy: Sylvia Phillips

Momentum is a characteristic of a moving object that is related to the mass and the velocity of the object.

The law of Conservation of Momentum states that in the absence of outside forces, in the absence of outside forces like friction, the total momentum of objects that interact does not change.

Mass times Velocity equals momentum.

We us "P" for momentum because they used the word "impetus" instead of momentum, and this word means "petere" which is Latin.

A heavy moving van and a small motorcycle can have the same momentum based on speed. If a heavy moving van is moving at a low speed and a small motorcycle was moving at a high speed the momentum would be equivalent.

The difference between a "sticky-collision' and a "non-sticky" collision is when a "sticky-collision" occurs when two objects collide and they stick together while a "non-sticky collision" occurs when two objects collide and they do not stick.

Elastic Collision
Inelastic Collision

If you threw a piece of clay onto the floor it would be a sticky collision because the clay would stick to the floor and not bounce back up.

Angular momentum is when an object spins around instead of going straight. Stars, planets and moons are good examples of this because they orbit.