Hello, I am practicing for the INternational Physics Olympiad qualifier and I was working on a practice test when I stumbles across what seemed like an easy problem. I thought It was super-intuitive, but I can't seem to verify a correct answer with the multiple choice selection. Here's the Problem: A ball ( or projectile, no matter) is thrown vertically with a velocity V. The ball reaches a maximum height h. In terms of h, at what height is the ball traveling at half of its initial velocity? Seemed easy at first, cause I knew and still know that it's a matter of plugging into the kinematics equations. the problem is that my logical setup isn't working out. I tried using the formula V^2=V0^2-2gh, but uh.... it's not workin out Can someone come to my rescue!?