I don't think their is a direct ratio between velocity and rotational speed. I have no idea how to compute the answer. I'm pretty good at numbers, but those fancy equations with the letters and symbols in them just make my head hurt! Guess that's why I went to law school. grin

Maybe Mathman will stop in later and give a good answer and explanation. I'm kind of curious myself.

Those who must raise their voice to get their point across are generally not intelligent enough to do so in any other way.