A ball is dropped on to a floor from a height of 10 m. It rebounds to a height of 2.5 m . If the ball is in contact with the floor for 00.01 sec. What is
the average acceleration during contact.
(A) 1400 m/s^2
(B) 2100 m/s^2
(C) 700 m/s^2
(D) 2800 m/s^2