http://www.popularmechanics.com/scie...tml?page=2&c=y
"When I ran computer simulations of pitches, I made some interesting discoveries. I learned that over the standard pitching distance of 60 ft. 6 in., a ball loses about 9 percent of its initial speed due to aerodynamic drag--thus a pitch launched at 90 mph will have slowed to 81 mph when it reaches the batter."
"After all, a baseball must obey the laws of physics, and there was a well-established theory and sufficient data available to allow me to calculate the aerodynamic forces on a baseball in flight."
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http://en.wikipedia.org/wiki/Galileo_Galilei
He (Galileo) also concluded that objects retain their velocity unless a force – often friction – acts upon them, refuting the accepted Aristotelian hypothesis that objects "naturally" slow down and stop unless a force acts upon them (again John Philoponus had proposed a similar (though erroneous) theory). Galileo's Principle of Inertia stated: "A body moving on a level surface will continue in the same direction at constant speed unless disturbed." This principle was incorporated into Newton's laws of motion (1st law).
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Only one can be true. I believe Newton's First Law of Motion trumps the statement, "a pitch launched at 90 mph will have slowed to 81 mph when it reaches the batter." I saw a lot of 90 mile an hour pitches an none of them slow down at that rate. If a pitch would pass me at the plate at 81 mph then I would have NO PROBLEM hitting it, even at my age. That article is a JOKE. I stated a long time ago that it was full of BS and that I could prove it. I also stated another article provided by BIGUMP about gripping different pitches was also full of BAD MOFO. No one from the peanut gallery believed those who have sided with me at the time. Perhaps you can use your brain this time around and put an end to this MYTH.