Usain Bolt vs. Gravity
Who's faster over 10 meters - the fastest sprinter in the world, or gravity? Also, explore a map of the big bang! http://www.bigbangregistry.com MinutePhysics is on Google+ - http://bit.ly/qzEwc6...
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Did you know that a 10 meter platform diver covers the last seven meters they fall inless time than the first three? Actually, this also applies to a falling rock… butrocks aren't nearly as good looking. Anyway, by the time a diver (or rock) has fallen threemeters, they're already going about 17mph, and as they fall farther, they continue topick up speed so that they cover the remaining distance in less time.But now suppose a world record sprinter races our olympic diver - that is, Usain Bolt startsten meters from the finish line, and the diver starts ten meters above it. Who gets therefirst?Well, Bolt's actual running time through the first 10 meters of his world record was 1.74seconds, while a rock falling 10 meters takes only 1.43 seco...
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Did you know that a 10 meter platform diver covers the last seven meters they fall inless time than the first three? Actually, this also applies to a falling rock… butrocks aren't nearly as good looking. Anyway, by the time a diver (or rock) has fallen threemeters, they're already going about 17mph, and as they fall farther, they continue topick up speed so that they cover the remaining distance in less time.But now suppose a world record sprinter races our olympic diver - that is, Usain Bolt startsten meters from the finish line, and the diver starts ten meters above it. Who gets therefirst?Well, Bolt's actual running time through the first 10 meters of his world record was 1.74seconds, while a rock falling 10 meters takes only 1.43 seco...
