We assume here that acceleration equals -g (with the positive direction upward). D = VO - gt y = yo + vol - N/ K 02 = Un - 28 () - yo)A rock breaks loose from the top of a cliff 125 m high. A hiker below sees the rock coming down 1.60 s after it starts to fall. How far above the hiker is the rock when he sees it and how much time does he have to move before the rock hits the ground