# chemistry

world class times in the 100 meters foot race areabout 9.10 seconds. how far is that in miles per hour

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1. 100 m x (39.37 in/m) x (1 ft/12 in) x (1 mi/5280 ft) = ?? miles.

9.1 s x (1 min/60 sec) x (1 hr/60 min) = xx hours.
Therefore, 100 m/9.1 sec = ??miles/xx hours.

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posted by DrBob222

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