Need help with arrow velocity......
I was doing tests at the field with my 48# short bow. The arrow I was using had no broadhead or point, just bare blunt. And also had only two fletchings (very accurate indeed, suprisingly). The arrow traveled approx. 75 feet in 0.68 of a second. I do not know an equation that would give me my arrow velocity in fps or mph. My friend stood a at a safe distance while I fired my arrow into a metal can at excactly 75 feet, and he did the best he could to record it with a timer. We did it three times to insure accurate timing and it was good. Also, I was using a sinew string, and since it is highly elastic and absorbs a small fraction of the energy in the bow, I was thinking I should add about 9 or 10 fps extra IF I was using a fiber string that would not stretch. So any help would be much appreciated.
