Here it is.
it works good enough. dont listen to those nay sayers.
all you need to do is work at it for a while and you'll get good at it.
Randall
Example on how to calculate speed vs. distance
Distance 60'-6", clocked at .59 seconds:
A- 60.5' divided by .59 = 102.54
B- 102.54 divided by 1.466= 69.9 or 70 mph
1.466 = 1 mile in feet (5280) divided by 1 hour in seconds (3600)
5280/3600=1.466