1. The problem statement, all variables and given/known data The problem is in the picture(attached) 2. Relevant equations I know we have to use m1v1 + m2v2 = m1v1' + m2v2' (1/2)m1v1^2 + (1/2)m2v2^2 = (1/2)m1v1'^2 + (1/2)m2v2'^2 3. The attempt at a solution All I know is that it needs to be split up into components. Please help me out.