1. The problem statement, all variables and given/known data The question is as follows: An object falls from the top of the roof of a building. The object falls past a 3.5 meter high window somewhere on the building ,in 0.47 seconds. Find the distance between the top of the window and the roof. 2. Relevant equations V=d/t (Velocity = Distance over Time) Vf^2=Vi^2 + 2ad (Velocity Final squared = Velocity initial squared + 2 times acceleration times distance) I believe these are the equations that I should be using. 3. The attempt at a solution 3.5/0.47 = 7.44681 = V So, Vf = 7.44681, Vi = 0 (assuming the object falls from rest), Acceleration = 9.8m/s/s, distance = X 7.44681^2 = 0^2 + 2 (9.8) (d) 55.455=19.6 (d) 55.455/19.6 = 2.82934 d = 2.82934 d = 2.8 meters. And that is what I have so far, 2.8 meters from the top of the window, to the roof. Would this be the right approach to the problem? Or have I made a mistake?