mass X acceleration = force
That’s why a big pitcher needs to use more speed because that will egual more force. That’s why a big mass pitcher can throw hard because he uses mass. So if he used mass and good accleration then he would get the most potiental energy out of his body.
And a small pitcher needs to use a GREAT deal of speed to get force.
Acceleration is the only part you can change to get force unless you workout and add mass.
So saying all of that to get max potiental energy you need to move fast because mass X acceleration/speed = force