Originally Posted by toly
In general, IMO, our body just cannot create very fast straight linear motions. That’s why, Federer and Nadal rotates straight arm before impact. I didn’t see any pro that can use straight linear motion before and during impact. Maybe you can provide some videos that support hitting through idea?
I think you are making some very good points here. Even if there are math terms
that account for the arc motions of the body in a linear result, that still does
not change that the actual motion was an arc.