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27 August, 20:37

In 4 minutes, an athlete can run 1 kilometers. Express the athlete's average speed in meters per second. Round to the nearest tenth.

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  1. 27 August, 22:20
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    First you have to convert min to sec ...

    i. e. 4 * 60 = 240 sec

    Then you can convert km to m ...

    i. e. 1 km = 1000 m

    speed = distance / time

    speed = 1000 / 240

    = 100 / 24

    = 4.167

    = 4.2 meter / second² (approx)
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