Question 227698
the magnitude of the mass has no effect (remember Galileo!!...)


time = velocity / acceleration


distance = 1/2 * acceleration * (time)^2


substituting ___ distance = 1/2 * (velocity)^2 / acceleration


sqrt(2 * acceleration * distance) = velocity


sqrt(2 * 9.8 * 12) = v ___ 15 = v