2008 Olympics: Usain?s Insane 100m

    Posted In: Blog Discussion

        • Keymaster
          Mike Young on August 19, 2008 at 6:42 am #14783

          Well, by now everyone in the world knows that Usaine Bolt is not a human being. At least not by the standards we have been using for the last couple millennium. His 100m performance of 9.69 was just mind-boggling. 9.69 beat Bolt’s previous world record by 0.03 seconds and is faster than the WR of just last year by 0.05 seconds. That’s like a swimmer breaking a world record by 4 seconds…never m

          Continue reading…

          ELITETRACK Founder

        • Participant
          klp2332 on August 19, 2008 at 7:51 pm #71572

          good read…
          very good read…

          but how were you able to compile the table?

        • Participant
          Matt Gardner on August 20, 2008 at 2:18 am #71578

          Good blog. I didn’t really see it mentioned in the blog, but this was with basically nil wind. 9.5’s are certainly something within the realm of possibility for Bolt.

        • Keymaster
          Mike Young on August 20, 2008 at 2:22 am #71579

          good read…
          very good read…

          but how were you able to compile the table?

          I was sent some split data from a friend. I don’t believe it’s the IAAF research grade / official data but I believe it’s pretty accurate.

          ELITETRACK Founder

        • Keymaster
          Mike Young on August 20, 2008 at 2:24 am #71580

          Good blog. I didn’t really see it mentioned in the blog, but this was with basically nil wind. 9.5’s are certainly something within the realm of possibility for Bolt.

          Right. If you add in 2 m/s wind on to the ideal race model I created plus a little (but still within allowable) altitude you definitely go in to the mid to low 9.5s.

          ELITETRACK Founder

        • Participant
          trackspeedboy on August 20, 2008 at 3:28 am #71581

          [quote author="Matt Gardner" date="1219178911"]Good blog. I didn’t really see it mentioned in the blog, but this was with basically nil wind. 9.5’s are certainly something within the realm of possibility for Bolt.

          Right. If you add in 2 m/s wind on to the ideal race model I created plus a little (but still within allowable) altitude you definitely go in to the mid to low 9.5s.[/quote]

          Just what I wanted to hear, a nice tailwind and you got yourself a good 9.5. Hopefully wr will see this next year maybe at worlds?

        • Participant
          BLogaN on August 20, 2008 at 4:18 am #71587

          It will be nice to see what he does in the 200m. I’m curious to see if he’ll hold back or go for the WR…

        • Member
          aivala on August 20, 2008 at 4:39 am #71589

          When the acceleration is shown on a graph it´s normally shown as a climbing line, but given that one actually feel the “changing gears” it would be interesting to see the actual speed pattern with help of a laser gun instead of splits every 10m.

        • Keymaster
          Mike Young on August 20, 2008 at 4:52 am #71590

          The problem with the laser guns (I’ve used them on hurdlers and jumpers) is that there’s so much noise (from athlete movement, not being centered on the athlete’s back, etc) that it has to be smoothed quite a bit and then doesn’t become much more useful than the splits. They give you the data but it can be anomalous. The way to really do it would be to put a GPS unit on the athlete’s jersey OR set up data collection points at 1 or 2m intervals so that you could get the more even curve your speaking of. The problem with the latter, it will rarely if ever work when there’s more than one person in a race.

          ELITETRACK Founder

        • Member
          aivala on August 20, 2008 at 6:25 am #71591

          True.
          Is there any implementation of the Doppler effect? Usage of high freq. sounds can give you a good shot at the real time. Another option is using radio transmitors, as used (experimentally) on some soccer balls.

        • Participant
          RussZHC on August 20, 2008 at 7:18 am #71592

          Overhead(camera on cable)shot, any motion analysis software.
          There could also be some feedback from the camera rolling along side the track over the 100m straight i.e. between a “camera log” and motion analysis it should work.

        • Participant
          jstambler on August 22, 2008 at 1:01 pm #71705

          anyone else notice that he beat the 60m record, by almost a tenth, en route to this 100m record

        • Keymaster
          Mike Young on August 29, 2008 at 4:56 pm #71853

          Overhead(camera on cable)shot, any motion analysis software.
          There could also be some feedback from the camera rolling along side the track over the 100m straight i.e. between a “camera log” and motion analysis it should work.

          An overhead camera wouldn’t work too well unless it was completely stationary over each split point. That would work pretty well. If you’re going to use moving cameras on a track they really need to be from the side and be relatively matched with each person or I suspect you’d get huge perspective errors.

          The problem with taking 10m splits on the 100m is that slight errors of 0.01-0.02 can make the subsequent splits anomalous if you don’t catch it.

          ELITETRACK Founder

        • Participant
          Daniel Andrews on August 29, 2008 at 5:59 pm #71856

          better accelerometers possibly attached to the athletes hips?

          I am actually trying things with my wiimotes right now. It’s great stuff. Accelerometer and IR Camera rolled into one unit.

        • Participant
          Nick Newman on August 18, 2009 at 10:00 am #87788

          I’m just wondering,

          How 0.90 = 11.11 m/s…

          or is that the top speed somewhere in that 10m segment?

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