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Katie is walking down the road at 2 m/s when a scary dog starts to chase her. She accelerates at 3 m/s2 for 4 seconds. How fast is she then running?
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14 votes
14 votes
Katie is walking down the road at 2 m/s when a scary dog starts to chase her. She

accelerates at 3 m/s2 for 4 seconds. How fast is she then running?

User Aref Ben Lazrek
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2.4k points

1 Answer

24 votes
24 votes
  • Initial velocity=u=2m/s
  • Acceleration=a=3m/s^2
  • Time=t=4s
  • Final velocity=v


\\ \ast\sf\hookrightarrow v=u+at


\\ \ast\sf\hookrightarrow v=2+3(4)


\\ \ast\sf\hookrightarrow v=2+12


\\ \ast\sf\hookrightarrow v=14m/s

User Fawaz
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