Q1. A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope to do this?
Q2. An archer puts a 0.25 kg arrow to the bowstring. An average force of 220 N is exerted to draw the string back 0.95 m. imagine that air resistance is negligible. Assume that all the energy goes into the arrow, with what speed does the arrow leave bow?