1. The problem statement, all variables and given/known data A 0.200-kg mass is attached of a 0.800 m length string to form a pendulum. The pendulum is released from a horizontal position. At the bottom of its swing, it collides elastically with a 0.400-kg mass which is at rest on a horizontal, frictionless v surface. Find the velocity of each mass immidately after the collision. 2. Relevant equations p=mv v1+v1f=v2+v2f 3. The attempt at a solution the answers are v .2kg= -1.32m/s v .4kg= 2.64m/s but I need to know the steps so I can study for the tests.