A lot, it depends on the type of pitch. A 4-seam fastball or 2-seam fastball will have more rotations, but a knuckle ball may have little to no rotations, where as the curve ball and slider are in between.
it is 40 feet from the pitchers mound to home plate
Measure from the front edge of the pitching rubber to the back tip of home plate.
This has been asked before... The answer is:How_far_is_it_from_the_pitchers_mound_to_home_plate
The pitcher's plate (or rubber) is 10 inches higher than home plate.
It is 60' 6" from the back of the plate to the front of the rubber.
sixty feet six inches