Problem: Two metal spheres, each of mass 9 g and initially at rest, are dropped from a height of 5.1 m in an evacuated chamber. One sphere has a charge of +101 µC, and the other has a charge -101 µC.
Part A: Find the difference in final speeds of the two spheres (the speeds just before each one hits the ground).
I need expert help to solve the above problem and recall that there is an electric field of about 150 V/m near the Earth's surface.