A hockey puck with mass 0.250 kg traveling along a line at 2.5 m/s strikes a stationary puck with the same mass. One puck exits the elastic collision in a direction that is 20 degrees away from the line at appeal of 2.35 m/s. What is the speed of the second puck after the collision? Q 0.63 m/s O 2.5 m/s 0 0.15 m/s 0 0.85 m/s 0 0.73 m/s