A hockey puck of mass 0.6 kg with an initial speed of 7.25 m/s collides elastically with an- other equally massive puck initially at rest. After the collision, the two hockey pucks are observed to have the same speed, each recoil- ing symmetrically at equal magnitude but op- positely directed angles from the initial puck's direction. Before O After What is the angle o between the two recoil- ing pucks? Answer in units of ". 014 (part 2 of 3) 10.0 points What is the speed of each recoiling puck? Answer in units of m/s. 015 (part 3 of 3) 10.0 points If the collision had been completely inelastic. so that the two pucks had stuck together. what fraction of the kinetic energy of the incoming puck is the kinetic energy of the combined system at the end