The physics of the world’s fastest man

English: Usain Bolt at the World Championship ...

Scientists say they can explain Usain Bolt‘s extraordinary speed with a mathematical model. His 100m time of 9.58 seconds during the 2009 World Championships in Berlin is the current world record. Their model explains the power and energy he had to expend to overcome drag caused by air resistance, made stronger by his frame of 6ft 5in. John Barrow at Cambridge University who has previously analyzed how Bolt could become even faster, explained that his speed came in part due his “extraordinary large stride length”, despite having such an initial slow reaction time to the starting gun.

The physics of the world’s fastest man.

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