Hi, I'm new here. I hope this is the right area for this question. I've been reading wikipedia all day trying to figure this one out, and can't so any help will be much appreciated. Question: If F=ma, than m=F/a, right? So logically if an object has no force being applied to it that object would have 0 mass. Obviously though, things which do not have any force being exerted on them do not just cease to be. So what gives?