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Goat Riders of the Apocalypse
A Hundred Next Years
Just Read 'em!
If any one ever tells you there is no reason to suppress a memory, I ask you to kindly consider yesterday's ballgame. I'm working hard to forget it, but when the final score is 12-2, and you're on the losing end... thats pain. Well, at least Jason Dubois hit a homerun.
Speaking of pain, I call your attention to the top of the ninth inning. Luiz Vizcaino was pitching and he threw a 94 MPH fastball that barely ticked off AJ Pierzynski's glove and hit home plate umpire Greg Gibson in the face mask. Gibson fell to the ground and got up about three seconds later looking like he thought he was in Never-Never-Land.
The trainers brought out salts to help him wake up, but it took several minutes before he was apparently able to gain his wits. Admirably, he stayed in the game and finished up the last half inning.
When I saw the play, I immediately asked myself: How fast was that ball thrown? (94 MPH) and What must that feel like?
Deciding not to imitate Happy Gilmore, I've decided to call upon my physics class I took a long time ago in a galaxy far far away.
Velocity = Acceletation * Time
Kinetic Energy = 1/2 * Mass * Velocity^2
A standard baseball, according to the rule book is supposed to weigh between 5 and 5.25 ounces (or 142-149 grams.) LINK. For our purposes, I'll assume the fastball yesterday weighed 145 grams (5.125 Ounces).
A 94 MPH fastball is traveling at 42 meters/second.
KE = .5 * M * V^2
KE = .5 * .145 * 42^2 = 127.9 Joules (Units of Energy).
For Comparison, say you had a 20 pound barbell (9.07 kg) and you held it 57 inches above your foot (4'9" or 1.473 M), and then you dropped it. It would take .55 seconds to hit your foot (using acceleration due to gravity of 9.81 m/s^2), and would be travelling at 5.33 Meters per Second (11.93 MPH). Going back to our equation, we get:
KE = .5 * M * V^2
KE = .5 * 9.07 * 5.36^2 = 128.8 Joules (Units of Energy).
So, we could say that getting hit by a 94 MPH fastball is comparable to dropping a 20 pound barbell on your foot from 57 inches. Ouch.
Thus endeth the physics lesson. Disclaimer I am ignorant of a great many things in physics, probably didn't get the equations/math/concepts correct. Please excuse my shortcomings and feel free to be overly zealous in the comments pointing out where I screwed up.
Chicago Cubs Media Guide Trivia Nugget of the Day:
Page 84: "Any game scheduled to start after 5 p.m. is considered a night game. If a game is scheduled to start at 5 p.m. and is delayed by rain or for any other reason, it is considered a day game. If a game is scheduled to start at 5:01 p.m., it is considered a night game."
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