1. The problem statement, all variables and given/known data An 8.5 kg elevator is pulled at a constant velocity of 1.0 m/s by a 10.0 kW motor. Calculate the efficiency of the motor. 2. Relevant equations W = change in E = Fd e = Work out/Work in * 100 = energy out/energy in *100 Epotential = mgh Ekinetic = 1/2mv^2 P = W/t 3. The attempt at a solution Ekinetic = 1/2mv^2 = 8.5 J (Energy in) I don't know how to get the Work from the motor as I don't have the time???