One of the most confusing concepts for bowhunters today is the application of kinetic energy to their hunting rig.
For example, a reader writes: “I have read that kinetic energy of 50 ft./lbs. or more is good for big game such as whitetail deer. Does the kinetic energy change at different yardages? If so, what yardage is the standard they are using for the 50 ft./lbs. number?”
The term kinetic energy is derived from the Greek word for motion, kinesis, and the Greek word for active work, energeia. Therefore, the term kinetic energy means “through motion, do active work.”