1. Momentum and Collisions
Momentum mass x velocity
p=mv Units: kgm/s
Momentum is a vector- Direction matters! Be careful when entering the velocity!
Impulse- the change in momentum caused by a net force acting on the system.
J=FDt = mDv
Dv= v-v0

2. Collisions Two major types, Elastic, Inelastic
Momentum is conserved in collisions.
Momentum Before=Momentum After
Elastic Collision
Objects bounce off of each other
No lasting deformity
No heat generated
Kinetic Energy is also conserved

3. Inelastic Collisions
Lasting deformity occurs
Objects either stick together at the beginning and separate, or
stick together at the end.
Kinetic Energy is not conserved, since there is energy lost to heat.