Question

A man standing on the top of the tower 60 m height throws a ball in the vertically upwards direction with a velocity of 20 m/s. How long will it take the ball to pass by the man while moving in the downward direction.

Answer 1

V=u+at, 0=20-10(t),t=2s, total time to pass through man =2×2s=4s

Answer 2

V=u+at, 0=20-10(t),t=2s, total time through man =2×2s=4s