1. The problem statement, all variables and given/known data A 4.60-kg ball, moving to the right at a velocity of +2.31 m/s on a frictionless table, collides head-on with a stationary 9.80-kg ball. Find the final velocities of (a) the 4.60-kg ball and of (b) the 9.80-kg ball if the collision is elastic. (c) Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic. 2. Relevant equations P = (mvf1+mvf2) - (mvi1+mvi2) 3. The attempt at a solution I understand part c since they will have a combined mass and the same final velocity and that Vi2=0 however i can't figure out how to solve parts A and B.