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How Fast Can a Human Run? - The New York Times
How Fast Can a Human Run? - The New York Times
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Usain Bolt MPH: Breaking Down Amazing Speed from Olympic Sprinter | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
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Here's How Usain Bolt's Top Speed Compares to Michael Phelps and More
How Fast Can a Human Run? - The New York Times
