in a basketball game a referee throws the basketball upwardsfrom an initial height of 2.00 meters above the floor, withsufficient initial speed such that its highest point will be 4.20meters above the floor. a basketball players outstretched hand is2.50 meters above the floor when he holds his hand above his head,and he can jump with an initial speed of 3.90m/s upwards. how longafter the ball is released from the referees hand should the playerjump in order to reachthe ball just as his highest point of hisjump, if he is to do so (a) while the ball is still on its way up,and (b) when the ball is on its way back down?
