It is a riddle.
It is the strongest force,
to resist your force,
and yet it is not a force.
It never accelerates,
but it is always moving.
It never rests, and
it never gets tired.
It has been defined many ways,
but no one can quite capture it.
What is it?

I need your proves to clarify whether your solution is correct with all the points.

Posted by Jonathan Chang on 2005-04-28 23:28:41