Question : A ball is dropped on the floor from a height of 10 m. It rebounds to a height of 2.5m. If the ball is in contact with the floor for 0.01 sec, the average acceleration during contact is
(a) 2100 m/s2 Downwards
(b) 210 m/s2 Upwards
(c) 1400 m/s2
(d) 700 m/s2
Answer : The Right option is (b)
Solution :
