Neil deGrasse Tyson @neiltyson
FYI: Laws of physics show that it takes twice as much energy to throw a baseball 100 mph than it does to throw one at 70 mph. — PolitiTweet.org
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Wed Jul 11 01:40:13 +0000 2012
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Likely AvailableNeil deGrasse Tyson @neiltyson
FYI: Laws of physics show that it takes twice as much energy to throw a baseball 100 mph than it does to throw one at 70 mph. — PolitiTweet.org