I almost put this in the Ranma 1/2 forum, but then I realized that it didn't exactly come down to something in Ranma 1/2. Then it was the Fic Research forum, and while the information I'm after can certainly be used in someone's story, what I really wanted to know is based more on curiosity and a subject that isn't reliant on anything fictional. But, if anyone feels like one of those places is more appropriate than this place, I'd understand if it were moved.
Anyway. What brought this to mind is because of something in Ranma 1/2, regarding speed, power and size. In the anime, at least, I think there are at least two occasions where it's explicitly said/illustrated that Ranma is faster as a girl; exactly how many times Ranma is weaker as a girl, I don't know. But that got me thinking. Even if Ranma has less mass as a girl, if she's faster (for whatever reason) couldn't that make up for it? Well, as far as the force behind a punch is concerned? (I wouldn't expect her to be able to lift the same, but what do I know? That's why I'm asking! XD )