A ball is thrown upward with a speed of 35 m/s from the edge of a cliff of height h = 15...

A ball is thrown upward with a speed of 35 m/s from the edge of a cliff of height h = 15 m (similar to Fig. P3.22). (a) What is the speed of the ball when it passes by the cliff on its way down to the ground? (b) What is the speed of the ball when it hits the ground? Ignore air drag. Assume the ball is thrown straight up.