I know I have seen discussion before on this. I also think I have seen it in a correlation of 11-Man vs 6-Man. So while day dreamng on the think tank, I came to this realization and wanted to know peoples thoughs on it.

Speed is calculation of a set distance in relation to time. So a straight distance of 40 yards in 4 seconds is 10 yards per second which is 25.45 MPH.

Average speed is a similar calculation over a non determined distance using predefined distance markers to make an average.

Quickness is not a calculation of speed over distance; it is a calculation of rate of change while the body is under load. I do not have a calculation for this but I pretty sure someone already come-up with it.

Food for thought anyway....