07 Conservation of Momentum

Collisions: objects that come in contact with each other

In a collision system, momentum is always conserved, but kinetic energy may or may not be conserved. Kinetic energy can be converted to thermal energy (heat) or internal energy.

Elastic Collisions

1. Kinetic energy is conserved
2. Total momentum and

Inelastic Collisions:

1. Kinetic energy is not conserved
2. Shown through deformation of the object.

Perfectly inelastic collisions

A collision where things stick together after the collision

Momentum

$\vec{p}=m\vec{v}$

For all types and for perfectly inelastic

Kinetic Energy

$\text{Kinetic Energy}=\frac{1}{2}m{v}^2$