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05-09-2014
Physics

Answered

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.

Answer :

05-09-2014

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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