Coulombs law states 2 point charges of opposite sign will attract where acting simultaneously on two point charges and as follows: The formula calculates the force that will act and implies the force be equally experienced by both points of charge even if one charge is much greater than the other In a vacuum , two such charges will move toward each other. My first question is do they move at the same velocity and acceleration even though their charges are radically different in sign and strength. Of course one stipulation of the law is that the charges are point charges and have no mass. What if we complicate the problem by allowing each "entity" to have both charge and mass. Further let us say that q1 has large mass and low charge , and Q2 the opposite. Question 2 Will the force F be experienced by both entities equally, or must the equation be re written to allow for some differential force with a lower value on q1 and a larger for q2 ( or possibly vice versa) In a vacuum , what will motion look like.One would assume the smaller mass Q2 will be accelerated at a higher rate and move toward the larger mass at a much higher velocity and the large mass Q1 will hardly move at all Is that what happens , or does the F get distributed in FAVOR of Q1 so the acceleration and velocity are normalized despite the difference in mass.?