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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.

Sagot :

AL2006
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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