Let's leave the balls alone now and see if we could understand the art of serving the lady
As we are on Basics, what does the engineer in you think of this?
A series of Closed Changes down LOD.
Four graphs with horizontal time-axes.
1. Forward speed
2. Rise and fall
3. Sway (displacement)
4. Angular velocity
Superimpose them.
Notice the maximum rotational speed on step 3. Is this what is being called body swing?
Also on step 3, forward progression is momentarily at rest, rise is at maximum but vertical movement has ceased and sway is at maximum but there is no horizontal movement in the moment.
Correct me if I am wrong.
It seems to me that this would explain some things clearly.
Andrew