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100 metres at the Olympics - Wikipedia
Usain Bolt MPH: Breaking Down Amazing Speed from Olympic Sprinter | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Beyond Usain Bolt: can the world's fast men get faster still? | Athletics | The Guardian
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Track & Field 101: Rules | NBC Olympics
Something Strange in Usain Bolt's Stride - The New York Times
How Olympic Tracking Systems Capture Athletic Performances - Scientific American
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How Elite Sprinters Run So Fast [Video] - Scientific American
How Fast Is the World's Fastest Human? | Britannica
How does Usain Bolt run so fast? - BBC News
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Technique: Analysis of Usain Bolt's Running Technique | Pose Method
How does Usain Bolt run so fast? - BBC News
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