foul ball?

Question

A foul ball is hit straight up into the air with a speed of about 18 m/s.
(a) How high does it go?
(b) How long is it in the air?

Answer 1

b. t=v/g up + v/g down = 2v/g
a. Ave. speed up = v/2. Height = ave. speed * t. From this we get h = v^2/(2g).