Usain Bolt the world-famous sprinter of mass 94 kg completes a 100 metre race in 9.6 seconds calculate his kinetic energy
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Energy is usually defined as the capability for doing work. For example, when Usian Bolt set the world record of 9.58 s in the 100 m sprint (Berlin, 2009), he used energy to accelerates his body mass of 86 kg (190 lb) to his top speed of around 12 m/s (around 27 mph) at around the 65 m mark. This is about the fastest running speed, achieved by Bolt, Maurice Greene and Donovan Bailey (1996). Record marathon times are around 2 hours, 5 minutes (about 12.77 mph), and mile times around 4 minutes (15 mph).
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(47000000) ÷ (96×96)
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