100 meter how fast

It all starts today! The greatest race in the Olympics is the simplest. Eight runners, eight straight lines. A bang, an explosion of muscle and, less than ten seconds later, you have a winner. And all they do is run.

No boats, bikes or horses. See this list of m World Records , which tells us who is the fastest over the m distance. However, this does not tell us who ran at the fastest speed, just who had the best average speed over that distance.

If you take the average speed of the current world m record Usain Bolt's 9. However, if you were to record instantaneous speed at different points throughout the race, the runner would reach a maximum speed much greater than this. Although you would expect that over a distance of m the runner will slow down after achieving top speed somewhere in the first m, Usain Bolt's m world record time of This is because the sprinters start from a stationary position and some time is taken up in accelerating up to top speed.

In the m, the second m is covered with a running start. The surprisingly persistent record progression is enough to make anyone ask: When will the fastest people on Earth cease to become any faster? And when they do, what will the fastest time ultimately be? Depending on how you look at it, the answer to the first question could be "very soon," or "not soon at all. Then came Bolt, who burst onto the scene at the Beijing Olympics with a record-wrecking time of 9.

But the following year, when Bolt broke his record by nine-hundredths of a second, he also broke, categorically, those old models.

Today, revised probabilistic estimates project that his record could stand for upwards of two centuries. But who knows how that projection will measure up against reality.

As applied mathematician David Sumpter has observed , Bolt singlehandedly demolished our ability to make reliable predictions about the meter dash. In , Jamaica's Shelly-Ann Fraser-Pryce, center, quickly kicked it into high gear while winning her second consecutive Olympic gold in the At this point, sprinters will generally have completed the start phase and will now be in the full running phase. Keep the body as relaxed as possible with shoulders down, leaning forward to maintain balance [1].

Feet land under hips with no overstride or excessive braking. There should be no wasted energy through torso rotation [2]. Sprinters start to approach top speed after accelerating for the first 30 meters of the Donovan Bailey knew not to look back while beating Frankie Fredericks, center, and Ato Boldon, right, at the Olympics. Runners will be at peak speed halfway through the race. Stride length is generally more important than stride frequency [1].