Here we go again with junk science... KE doesn't kill? BS! Kinetic energy is the energy of motion. Everything with mass that moves had KE. If KE has nothing to do with the ability of a projectile to kill, then shouldn't a bullet in the hand be lethal? But we all know that it isn't. In order to make a bullet lethal, we have to make it go a certain speed. When we accelerate the bullet, we are imparting KE to the bullet. Then, when the bullet hits the target, that stored KE is used to punch a hole in the target and, if applicable to bullet design, make the bullet expand or disintegrate. How MUCH KE, and therefore how much mass and/or velocity, is required to accomplish the task of creating a sufficient sized hole depends on a number of factors, but ultimately the KE is what allows the bullet to do its work. So, regardless of the projectile type, be it a 150gr bullet at 3000 fps (2,997 ft-lbs), a 400 grain arrow at 275 fps (75.5 ft-lbs), or a 40,000 lb bus at 35 mph (1,638,000 fl-lbs), it's still the KE that kills you. Only the APPLICATION of KE differs.

Mike