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22 April, 19:11

With an average acceleration of - 2.4 m/s2, how long will it take a cyclist to bring a bicycle with an initial speed of 13.2 m/s to a complete stop? Answer in units of s.

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  1. 22 April, 22:07
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    If his speed (decreases by 2.4 meters per second every second) * *, then

    his speed will be zero in (13.2 / 2.4) = 5.5 seconds.

    * * That's the meaning of "acceleration of - 2.4 m/s² ".
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