re: An example problem
Tonnes of matter, or mass? I thought matter and mass weren't interchangeable? I thought matter was more of a physical thing, whereas mass was, well, I guess I wasn't quite sure...
At least I recalled someone telling me that mass =/= matter? Or maybe that was mass versus weight...? Those I'm pretty sure are definitely not the same. But I thought that mass and matter weren't the same thing either?
Ahh, well, perhaps it was just a semantic argument anyway...
