Friday 26 July 2013

Scientists Reveal That World's Fastest Man Usain Bolt Is More Energetic Than A Speeding Bullet... And Can Reach Speeds of 27MPH

Resistance: Bolt developed more than 80kJ of energy but more than 92 per cent of it was absorbed by the drag

In a new
report, they reveal that the world's fastest man Jamaican born Usain Bolt produces more energy than a speeding bullet, and can reach up to 27MPH. Remarkable stuff right? see how they explain it below:
Olympic champion Usain Bolt produced 50 times more energy than that of a speeding bullet during one of his record-breaking 100metre runs, scientists have revealed.
Physicists studying the secrets of Bolt's success announced the findings after a detailed study of the Jamaican sprinter's 100m performance during the 2009 World Championships in Berlin.
They discovered that he produced a remarkable 81.58kJ of energy - compared to just 1.6kJ of energy a bullet produces when it leaves the barrel of a 0.44 calibre Magnum handgun.
They also calculated that he reached a top speed of 27mph during the race.
But unlike a bullet - which can reach 1,000mph - Bolt's huge 6ft 5ins frame meant more than 92 per cent of his energy was absorbed in battling air resistance.
The researchers found he had to produce an 'extraordinary' amount of power to reach his 100m world record time - and because he's so tall he is less aerodynamic than the average human.


They made the discovery after taking into account the altitude of the Berlin track, the temperature at the time of the race and the cross-section of Bolt himself.

Fastest: Bolt had to exert an 'extraordinary' amount of power to make the time because his large frame makes his less aerodynamicBolt reached a maximum power of 2,619.5watts - a horsepower of 3.5 - within 0.89 seconds when he was only at half his maximum speed, which shows the effect the drag had on his acceleration.
Jorge Hernandez, co-author of the study which was published in the European Journal of Physics, said: 'Our calculated drag coefficient highlights the outstanding ability of Bolt.
'He has been able to break several records despite not being as aerodynamic as a human can be. The enormous amount of work that Bolt developed in 2009, and the amount that was absorbed by drag, is truly extraordinary.
'It is so hard to break records nowadays, even by hundredths of a second, as the runners must act very powerfully against a tremendous force which increases massively with each bit of additional speed they are able to develop.
'This is all because of the 'physical barrier' imposed by the conditions on Earth. Of course, if Bolt were to run on a planet with a much less dense atmosphere, he could achieve records of fantastic proportions.'

No comments:

Post a Comment