physics question , please help. Kinetic energy and potential energy?

[molly g]

A 0.175 lb ball is thrown upward with a initial velocity of 75.0 ft/s.What is the maximum height reached by the ball?

[sumdudenamedbob]

At the maximum height the velocity is 0ft/s. You know the intial velocity and the ball is acceleration is equal to gravitiy.
1. Convert ft/s to m/s 75ft/s =22.865m/s

2. Use kinematic eqn. Vf^2=Vi^2 + 2gh
h=(V^2-Vi^2)/2g
h=22m