Question

After traveling for 6.0 seconds, a runner reaches a speed of 12 m/s after starting from rest. What is the runner’s acceleration?A. .5 m/s2B. 6 m/s2C. 72 m/s2D. 2 m/s2

Answer 1

We can find the acceleration as follows:

`\begin{gathered} a=(\Delta v)/(\Delta t) \\ so: \\ a=(12-0)/(6-0) \\ a=(12)/(6) \\ a=2m/s^2 \end{gathered}`

Answer:

D. 2 m/s^2