# After traveling for 6.0 seconds, a runner reaches a speed of 10 m/s. What is the runner’s acceleration?

Average acceleration $= \frac{5}{3} m$/${\sec}^{2}$
Starting from $0$ and ending up at $10 \frac{m}{\sec}$ after a period of $6 \sec .$
$\textcolor{w h i t e}{\text{XXX}} \frac{10 \frac{m}{\sec}}{6 \sec} = \frac{5}{3} \frac{m}{\sec} ^ 2$