A. You move a positive charge +q towards an identical positive charge at constant speed. 1. If you do 100 J of positive work on the system, what is AU? 2. If you move it back to where it started, what is AU for the entire movement? B. You release a negative charged object with mass 2 kg from rest near a negative source charge. The charged object moves away from the source charge to a new location where the change in electric potential energy is AU = -100 J. What is the final speed of the object? (Recall that K = -mv.)