A man throws a ball vertically upward and it rises through am and returns to his hands what was the ascent initial velocity of

Question

A man throws a ball vertically upward and it rises through am and returns to his hands what was the ascent initial velocity of the ball and for how much time T it remained in a T 5 sec u 20 3 m s T 5 64 sec u 10 2 m s T 5 64 sec u 20 2 m s

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