What is the difference between work done on an object and work done by you? For example, you exert a 100N force pushing a 10kg mass 3.0m across the floor with a coefficient of friction 0.60 1) what is the work done on the mass? 2) what is the work done by you? For question 1 I think it has to do with a change in kinetic energy, and 2 with kinetic energy and heat energy, but I'm not sure how to solve? Thanks!