In his calculation of ball speed, he has three factors that are used to calculate ball speed - Vclubhead, M (mass of the clubhead) and m (mass of the ball).
That formula seems to imply that the clubhead has a constant velocity through impact. However, doesn't the clubhead continue to accelerate through impact as a result of the continuing release of power accumulators #1 and #3? It is my understanding that release of power accumulators #1 and #3 is only complete at the end of the followthrough (when both arms are fully straight and the leftarm-clubshaft is in a straight line alignment), and that they are still powering the golf club through impact (while the ball is in contact with the clubface). If correct, doesn't that "acceleration phenomenon" impart additional energy to the ball, that is not factored-in when David Tutelman uses that particular mathematical formula to calculate ball speed at the moment of ball-clubface separation?
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