a certain tower is 40 m tall. a man drops a lanzones from the top of onto the head of his enemy. if the enemy is walking at a speed of 1.2 m/s, ho many meters should the enemy be from the position below the lanzones when it is dropped ?
h = 0.5g*t^2 = 40 m
4.9t^2 = 40
t^2 = 8.16
Tf = 2.86 s. = Fall time.
Dx = V*Tf = 1.2m/s * 2.86s = 3.43 m.