A bouncing ball with a mass of 50 g is released from a height of 80 cm with an initial velocity V0=0 m/s.The ball bounces on the floor a few times. The graph shows the ball's height above the floor as a function of time.Task 1a) What is the speed of the ball immediately before it first hits the floor?b) How much mechanical energy does the ball lose at maximum bounce?task 2 Investigate how the mechanical energy of the ball changes with the number of bounces