Silly question and one that I know if I could find my physics book from college I could answer myself but it is lost in the abyss of the basement, or it was trashed years ago. Is there a formula to determine down range speed of an arrow. The IBO speeds and chrono's 5 yards down range are great but I want to know what speed that arrow is traveling at when it hits the target. Is there a chart somewhere that has information like this. I know this is a function of momentum instead of KE and will therefore have a lot to do with shaft diameter and arrow mass. Just curious.