Solve the all parts of following question:
Question: A football player of mass 90 kg is running at 10 m/s and catches a football of mass ½ kg that is moving at 40 m/s in the same direction. If the player is on ice (no friction) then,
Part A: What is his final speed after catching the ball?
Part B: How much energy was lost?
Please show all work to determine his final speed after catching the ball.