A rubber ball dropped from a height of 20m (g= 10 m//s^(2)) falls on the roof of an elevator going up at 2m/s. If the collision of the ball with the elevator is elastic, the ball rebounds with a velocity of

A rubber ball dropped from a height of 20m (g= 10 m//s^(2)) falls on t

1.	A rubber ball dropped from a height of 20m (g= 10 m//s^(2)) falls on the roof of an elevator going up at 2m/s. If the collision of the ball with the elevator is elastic, the ball rebounds with a velocity of
Answer» 20m/s 22m/s 24m/s 26m/s Answer :C