@Leadfoot,
Quote:That would satisfy Max's contention but in this example, A started before T=0 so Layman's view would be correct.
Where do you start, and where do you end?
Say I throw a ball straight into the air. Is there is a point at it's very peak (however "instantaneous"), where you can say the ball is "not moving?" Maybe. Maybe not.
Depends on your perspective, don't it? The ball is still orbiting the sun, participating, through so-called "inertia," in the earth's daily rotation, and moving in god only know how many other "directions."
Notice that if I hit a baseball into the stands, nobody would try to claim that it "stopped" at it's peak.
Me, I don't worry about them kinda details. Throw it straight up, or hit it into the stands. Either way I will say it was "moving the whole time."
If you try to get "instantaneous" about it, then nuthin ever moves nowhere. Just ask Zeno, eh?