Collisions

Elastic Collision

A collision in which colliding objects bounce off of each other; momentum and kinetic energy are conserved.

Collision

A situation in which two objects in close contact exchange energy and momentum

Newton's Third Law

For every action there is an equal and opposite reaction

Impulse related to momentum

Ft = mΔv

Impulse

I = Ft

Inelastic Collision

Objects stick together, momentum is conserved, but some kinetic energy is lost

Conservation of Momentum - Inelastic collisions

m1 v1 + m2 v2 = (m1 + m2) v'

Conservation of Momentum for two body collisions

m1 v1 + m2 v2 = m1 v1' + m2 v2'

Conservation of Momentum - Elastic collisions

m1 v1 + m2 v2 =m1 v1' + m2 v2'

Conservation of Momentum - Explosion collisions

m1 v1' = -m2 v2'

Momentum

p = mv

Momentum

the force an object has because of its motion; equals mass x velocity