12. A sprinter has an acceleration of 5m/s” during the first 2 seconds of the race. What velocity does she reach after this time?

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1. Answer:

   v=10m/s

   Explanation:

   [tex]a=\frac{vf-vi}{t}\\ 5m/s^{2}=\frac{vf-0}{2}\\ vf=5*2\\vf=10 m/s[/tex]

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