[Mark T. DeNucci, Sr.]

Originally Posted by derwil

COR is an abbreviation for coefficient of restitution. It measures the energy after the collision (in this case the ball and bat) vs. the energy prior to the collision. Energy is lost during the collision to sound waves, heat, ball and bat deformation etc. The bat that transfers this energy to the ball in a more efficient manner will have a higher COR, meaning less energy is wasted.

So to answer your question, higher COR is better - a "hotter", more efficient bat. There will never be a 1.0 or higher bat as that would increase the amount of energy in the system and contradict one of Newton's laws of Physics.

derwil:

It was not Sir Isaac Newton that formulated the equations for the Conservation of Energy. It was Gottfried Wilhelm Leibniz (see Newton vs. Leibniz and the invention of Infinitesimal Calculus; either you are a Newton man or a Leibniz man, ).

MTD, Sr.