Problem 3. A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is initially with a velocity of 2.0 m. After the collision, the 0.20-kg puck has a speed of 1.0 m at an angle of 0 = 53 to the original line of motion. (a) Determine the velocity of the 0.30 kg puck after the collision. (b) Is the collision an elastic one? Prove it