Two metal spheres, each of mass 10 g and initially at rest, are dropped from a height of...

Two metal spheres, each of mass 10 g and initially at rest, are dropped from a height of 5.0 m in an evacuated chamber. One sphere has a charge of and the other has a charge Find the difference in final speeds of the two spheres (the speeds just before each one hits the ground). Recall that there is an electric field of about 150 V/m near the Earth’s surface.