Reverse Missiles / not an "attack"

[Anthony]

Originally Posted by Varyon

Sure, but determining the kinetic energy requires diving into "The Deadly Spring."

No, that's just basic math -- it's equal to the area under the draw weight curve, which will be equal to draw weight * draw length * K", where K is a constant that depends on the design of the bow and is generally going to range between 0.5 and 0.8.

The Deadly Spring suffers from "too much math for a simple approximation, too little math to actually get it right".