Strike Pitch - Do you still call it?

[D-Man]

...for the physics perfessers out there.

How much can a pitched ball break from the front of the plate to the catchers mitt, say, 2 feet away? Understood fact: the ball will be travelling at its slowest velocity so it would be breaking at its greatest magnitude. Is it possible for a pitch, thrown overhand at a speed of, say, 60 mph, that needs to be blocked by a mitt touching the dirt, to be a strike given an 18" high batter's knee?

I'm not saying don't get the knee pitch nor am I saying call it where he catches it. Simply accept that we have a bad look at the low line of the zone and the coaches view is better. If the ball can't get to the catcher's knee then it was never a strike.

D