Physics Facts, Unit 6.2: Momentum and Impulse, multiple objects

The objects within the system may be moving, but the location of the center of mass is not changing.

Momentum is a vector that points in the same direction as velocity.

Object A and Object B will have the same magnitude of momentum change, but one will gain and one will lose.

Impulse is the effect of a force acting over a period of time.

The total momentum before a collision (P_i) is equal to the total momentum after the collision (P_f), so P_f = P_i.

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

The unit of momentum is kg*m/s.

Momentum is a vector quantity.

The momentum of an object is affected by its mass and velocity.

In an elastic collision, both momentum and kinetic energy are conserved.