Question

A sprinter starting from rest on a straight and level track is able to achieve a speed of 13 m/s in a time of 6.4 s. What is the sprinter's average acceleration? answer in : m/s2

Answer 1

The average acceleration is given by:

$a=\frac{v_f-v_0}{t}$

In this case the initial velocity is zero, the final velocity is 13 m/s and the time is 6.4 s. Plugging these values we have:

$\begin{gathered} a=\frac{13-0}{6.4} \\ a=2.03 \end{gathered}$

Therefore, the acceleration is 2.03 m/s²