Quiz 1. Even though electric forces are very much stronger than gravitational forces, gravitational forces determine the motions in the solar system. Why? 2. When we approach another person, we are not aware of the gravitational and electric forces between us. What are the reason in each case?1. Even though electric forces are very much stronger than gravitational forces, gravitational forces determine the motions in the solar system. Why? 2. When we approach another person, we are not aware of the gravitational and electric forces between us. What are the reason in each case? Quiz