The velocity $v(t)$ of a sprinter on a straight track is shown in the graph below.

Determine the evaluaton of each definite integral.

${\displaystyle \underset{0}{\overset{4}{}}}v(t)dt=,{\displaystyle \underset{4}{\overset{7}{}}}v(t)dt=|||$

${\displaystyle \underset{7}{\overset{10}{}}}v(t)dt=,{\displaystyle \underset{0}{\overset{10}{}}}v(t)dt=1$

$|$ Tries$\frac{0}{8}||$

Tries $\frac{0}{8}$

If $s^{\text{'}}(t)=v(t),$ then $s(t)$ is the position of the runner at time $t.$ Let $s(0)=-6,$ determine the following values.

$s(4)=$

$s(4)=,s(5)=$

$s(7)=,s(9)=$