not the best example, but why does an elephant lumber around at such a ponderous pace and little ants seem to zip around at 3 or 4 times human speed? is it air resistance? gravity to muscle mass ratio? if we enlarged a 6 foot human being to 50 feet, would he walk around in slow motion? if we tapped his knee with a large mallet, would his reflex time differ from previously? what is going on here?