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11 October, 18:46

The world's record in the 100 m dash is 9.69 seconds and in the 100 yard dash is 9.21 seconds.

A) find the speed in mi/h of the runner who set the record of 9.69 seconds.

B) find the speed in mi/h of the runner who set the record of 9.21 seconds.

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  1. 11 October, 22:30
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    Speed is equivalent to the distance traveled divided by the time it takes to travel that certain distance.

    To solve this problem convert the units first from meter and yards to miles. 100 metes is 0.0621371mi and 100 yards is 0.0568182 yard. 9.69s = 0.002691667 hr and 9.21s = 0.002558333

    A.) 23mi/hr

    B.) 22.20mi/hr
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