Not if the hands remain in motion.

Yes, I've seen it in baseball movies, documentaries and yes, even in person as a child.

A pitcher can easily "rock" without separating the hands after coming together. And if they really want to gain a bit of momentum, the rocking pitcher can bring their hand's together over her head.

Nonetheless, still off subject or, at least, the subject I'm discussing.

Physically (as in kinesiology and physics, at least back when I went to college at some point in the last century), if the hands or foot/feet change directions (or, for that matter, any part of the body) there IS a stop.

Not if it goes in a circle...

But, I once read a story about a driver ticketed for failure to stop at a stop sign who took his case before a judge. He claimed that he had stopped, only very briefly, and perhaps the cop had not seen the stop. To demonstrate his defense, he tossed a coin up in the air, and asked the judge if he saw the coin stop before it reversed directions at the top of the toss.

He was acquitted. :)

My mother-in-law whom went to LSU got out of a ticket almost the same way.
She brought a vido of a pole vaulter in for the judge to watch. Explained that at some point the valuter had to stop in order to come down, but did you see it?

Judged smiled and dismissed the case.

Those are some weak judges..

Dont try that garbage with our judge.

There is nothing in either example that would apply to whether a car stopped. In fact, it is irrelevant and should be inadmissible.

Sorry.
A circle is not a change of direction. A circle is 360 degrees.

Well, one could say that a circle is a constant change of direction. ;) :)

ok. I'm wrong. Sorrrrrryyyyyy.

Hey, I was just being "technical"... (like you were)... ;)