His acceleration out of the the starting blocks clocked in at 9.5 meters per second squared, (31.2 ft/s2, which is almost 0.97 g (the acceleration due to Earth's gravity), and he generated an incredible 2.6 kilowatts of power (3.5 horsepower) less than a second later.


The study also showed that less than 8% of the energy his muscles generated was used for motion, the rest absorbed by drag. The physicists suspect that Bolt makes up for his large frame and slow reaction-time by virtue of his tremendous stride and fast twitch muscle fibres.

Interestingly, Bolt ran the 100-meters with a slight wind at his back. But even without that assist, calculations showed he would have finished the race only 0.1 second slower — which would still have still resulted in a world record.


Read the entire article at the European Journal of Physics: "On the performance of Usain Bolt in the 100 m sprint."

Image: Getty.