1. The problem statement, all variables and given/known data A hockey puck B rests on a smooth surface of ice and is struck by a second puck A , which was originally traveling at 40.0 m/s and which is deflected 30.0 degrees from its original direction. Puck B acquires a velocity at a 45.0 degree angle to the original direction of A. The pucks have the same mass. -Compute the speed of puck A after the collision. -Compute the speed of puck B after the collision. -What fraction of the original kinetic energy of puck A dissipates during the collision? 2. Relevant equations 3. The attempt at a solution This has got me really confused. I don't even know where to begin. I drew a diagram thought I was supposed to find the x and y components of A to get the final velocity of A and then change in A equals the negative change in B, but I'm not getting it. Please help!!