A man throws a ball vertically upward and it rises through 20 m and returns to his hands.
Channel: Doubtnut
Date: 2020-08-23

A man throws a ball vertically upward and it rises through 20 m and returns to his hands. What was the initial velocity  (u) of the  ball and for how much time (T) it remained in the air `[g = 10 m//s^(2)]`