Question

A ball is dropped on the floor from a height of 10m.It rebounds to a height of 2.5m.If the ball is in contact with floor for 0.01s.Then average acceleration during contact is

Answer 1

Average acc.  = total velocity/ total time ; √2gh(10) -√2gh(2.5) =5√2(total velocity) ; total time=0.01s Average acc = 500√2