Main Question or Discussion Point
I am not the best at drawing, I know.
If A exerts a force of 200N on B, then by newton's third law, 200N would be exerted on it. Similarly, if B exerts 100N on A, by newton's third law, 100N would be exerted on it. Then why wouldn't both accelerate in opposite directions with accelerations equal to 300/ma and 300/mb respectively?