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11 votes
11 votes
After traveling for 6.0 seconds, a runner reaches a speed of 12 m/s after startingfrom rest. What is the runner's acceleration?

User Kaqqao
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1 Answer

25 votes
25 votes

Given data:

Initial speed of the runner as he starts from the rest;


u=0

Final speed of the runner;


v=12\text{ m/s}

Time taken;


t=6.0\text{ s}

The acceleration of the runner is given as,


a=(v-u)/(t)

Substituting all known values,


\begin{gathered} a=\frac{(12\text{ m/s})-0}{(6.0\text{ s})} \\ =2\text{ m/s}^2 \end{gathered}

Therefore, the acceleration of the runner is 2 m/s².

User Zootropo
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