a ball is dropped on to the floor from a height of 10m rebounces to a height 2.5m.if the ball is in contact with the floor for 0.02s,its average acceleration during contact is?
a ball is dropped on to the floor from a height of 10m rebounces to a height 2.5m.if the ball is in contact with the floor for 0.02s,its average acceleration during contact is?