1. The problem statement, all variables and given/known data A small steel ball, dropped from rest, takes 0.5s to fall through a vertical distance of 1.25m. Determine the actual speed of the ball when it has fallen through a vertical distance of 1.25m, assuming that acceleration is constant. 2. Relevant equations v=s/t 3. The attempt at a solution Long ago I was helped by a friend to get the result ( 1.25m x 2 ) / 0.5s = 5ms-1 but I've forgotten how did he come to that conclusion, and the reason behind (1.25mx2), help is much appreciated .