any help in showing the way to solve this problem would be apreciated: the problem is: given to charges q1=2 micro colomb, q1=4 micro colomb, 10 inches apart, find the collision point. an obvious aproach would be calculating the position equation but in this problem the aceleration is not constant. as charges get close their interactions become stronger in a non linear fashion. i'm wondering if there is a 'shortcut' for the solution and this is why i'm posting here, so that i don't waste time needlessly. maybe it has to do with energy since the problem is near the other energy problems but i dont see how. please help me! ps: another way is a numerical aproximation but i don't think that's what the professor wants.