Usain Bolt: Berlin 100 m World Record Analysis

Usain Bolt's 100 meter dash world record in Berlin on August 16. 2009. I slowed down the footage by a factor of four and added some information about the intermediate time, distance and current speed. He had a reaction time of 0.146 (0.133 in the 200m final four days later) reached his top speed after about 70 meters (something between 12.3 and 12.4 m/s) and then slowed down, especially after about 93 meters. So he surely is able to run a bit faster still. The data is from Berlin Biomechanics Project (http://berlin.iaaf.org/news/kind=101/newsid=53084.html) and should be quite precise. I'm not related to that project al all, I'm just doing this for fun.

Comments

1. Excellent video! Much learned from it, including that elite sprinters lose almost a full second from a dead start (Bolt hits 10m in 1.90sec.) Thanks.
2. I have seen Usain Bolt training, during warm up and after a hard race and this criminal-minded and effeminate chap never gets exhausted and never runs out of breath.
   
   As a trained scientist, this tells me a lot about the true source of his speed and stamina - Bolt is clearly on dope that is well masked to avoid detection and even if caught the powers that be will let it pass to keep the sport's badly dented reputation from sliding further downhill.
   
   By the way, Bolt is girlish, supposedly likes dressing in drag and has been known to visit gay bars. His effort to appear heterosexual by surrounding himself with attractive girls is a ploy to deflect attention from his homosexuality not that being gay is wrong or abnormal.
   
   Sexual orientation is genetic variation at work. Variation or clines are seen in every human trait and with natural phenomena as well.
   
   Evelyn Ashford was the only clean woman in the sprints and at present Christophe Lemaitre comes across as clean.
   
   I have seen Christophe during training sessions and after a race - he takes quite a lot of time to recover from the sheer exhaustion of running a hard race and he is visibly tired.
3. he can run faster than how fast most people ride thier bike
4. My man's bear fast.. init
5. but still fast...init
6. but he's getting old now...init
7. I love ratsamouse... init
8. i love ze jamaican.. init
9. and he is a sick jamaican... init
10. he is well tall... init
11. usain bolt is well fast... init.
12. usain bolt is a fast runner
13. 41 steps in 100 meters... WOW
14. Superhuman effort!
15. Did anyone else notice those creepy sounds ?! It's Like Spirits communicating through some device XD
16. What's with all the dislikes? This was interesting and informative wtf?
17. less than 10 secs
18. If my math is correct, he'd actually run under 4.00 In 40yds .... 3.68-3.76 depending 😱
19. He can run at 43Km/H, and me, with my 25Km Top Speed
20. he will make a great NFL wide receiver.