Question

A ball of mass 50 g is dropped from a height of20 m. A boy on the ground hits the ball verticallyupwards with a bat with an average force of 200 Nso that it attains a vertical height of 45 m. Thetime for which the ball remains in contact with thebat is \lbrack Take g 10 m/s?\rbrack(1) 1/20th of a second (2) 1/40h of a second(3) 1/80th of a second (4) 1/120th of a second

Answer 1