Students will be able to
- use the formula in contexts where v can vary and where there are up to two different objects that change in velocity,
- find the combined momentum of two objects when their velocities are either in the same direction or in opposite directions,
- show that if momentum is conserved, the combined momentum of a pair of objects is unchanged when both of the objects change their speeds,
- show that if momentum is conserved, when an object breaks into pieces, the combined momentum of the pieces is equal to the momentum of the unbroken object,
- distinguish between changes in velocities of pairs of objects in which momentum is or is not conserved.