1. The problem statement, all variables and given/known data A 0.17kg cue ball is moving at 4.0m/s when it strikes a 0.16kg stationary numbered ball. After the collision the cue ball moves 60 degrees to the left of its original direction while the object ball moves 30 degrees to the right of the cue ball's original path. Determine the speed of the a) cue ball after the collision b) object ball after the collision 2. Relevant equations Px - mv = mv +mv 3. The attempt at a solution Ive marrowed it down to where you have (0.17kg)(4.0m/s) = (0.17kg)vCos60 + (0.16)vCos30 I dont know what to do with the 2 unknown variables. Your help is greatly appreciated! Cheers.