The work-energy theorem says that the work done on an object equals the change of kinetic energy of an object. At the gym, you lift a heavy dumbbell over your head. It arrives stationary. Did you do work on the dumbbell? Group of answer choices No work was done by you on the dumbbell since it is has not changed its kinetic energy Yes, but gravity did the same amount of negative work Yes, the dumbbell is hotter than it was below