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19 April, 06:59

A sprinter set a high school record in track and field, running 200.0 m in 21.8 s. what is the average speed of the sprinter in kilometers per hour? express your answer numerically in kilometers per hour.

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  1. 19 April, 07:23
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    The answer is 33.012 km per hour. You will use the formula speed = distance divided by time.

    speed = 200m / 21.8 sec

    speed = 9.17 m/sec

    in order to convert it by km per hour, you will just need to convert meter to km and seconds to hour by:

    9.17 m/sec (1 km / 1000 meters) (60 seconds / 1 minute) (60 minutes / 1 hour) = 33.012 km/hour
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