"MorituriMax" <[Only registered users see links. ]> wrote in message news:<0EtKc.4544$[Only registered users see links. ].com>...
When you think about there being infinite directions in space, it
seems that it ought to be easy to come up with something else, besides
just Free (inertial) Motion, and Forced (displaced) Motion; until you
figure that even these two are seen differently; depending on the
orientation and motion of whoever observes them.
Don't forget too that there are only three dimensions: Length, Width