1. The problem statement, all variables and given/known data Water is pumped from a well at 800kg/minute. The well is 14.0 meters deep. By the time the water reaches the top of the well, it is travelling at 18.0m/s. How much work is done on the water by the pump? 2. Relevant equations ƩFy = F - m*g = m*a W = F*y a = vf/t 3. The attempt at a solution a = vf/t = (18.0m/s)/60.0s = 0.300m/s^2 F = m*a + m*g = 8080 N W = F*y = 8080N*14.0m = 113,120 J But the answer in my textbook is 1.30*10^5 J.