Had some thoughts on that. Reckon he should have a friend with a stopwatch handy. Elbow a punchbag (or similar) 10 times then divide the friends stopwatch time by 10 for the time of 1 hit. If he knows the distance he can then work out the speed. Trying to use a stopwatch for 1 hit would not be accurate enough methinks. I reckon though, it is acceleration Scott needs, not velocity (F=MA).
