PreCalc Problem

Question

A ball that is dropped from a window hits the ground in 4 seconds. How high is the window? (Give your answer in feet; note that the acceleration due to gravity is 32 ft/s.)

To solve the problem I have tried using the formula h(t) = 16t^2 + Vot + ho and have ultimately gotten 260. It says it's wrong and I have thought of nothing else of what to do to solve the problem.

Answer 1

Try it this way. Use h(t) = - 16 t^2 + v_0 t + h_0. Since it hits the ground at t = 4, we know h(4) = ___ . Also, since the ball is simply dropped, we know v_0 = ___ . Now solve for h_0.