Originally Posted by toly
Itís true that leg and core rotation provide the major power, but with very low efficiency, from ball/racquet speed point of view. Most of this energy is wasted for rotation of 200 ponds and just a little bit is going to the ball.
As I said, physic law of collision:
m x v = m1 x v1 ( m is mass and v is speed)
1/Ball speed depend on physic law of collision
2/Ball speed depend on how much it is compressed and bounce out by itself and to and advance level, it depends on the prolongation of contact time.
Tell me you comprehend these, ( not disrespect at all, we need to be on the same page) then i continue to the linear energy (whip)