$\tiny{205.o8.14}$

$\textsf{The position of a partical moving along a coordinate line is given }\\$

$\textsf{what is the velocity when $t=3$}\\$

\begin{align}

\displaystyle

{s(t)}&={\sqrt{4+4t}}\\

&=2(1+t)^{1/2}\\

s'(t)&=\frac{1}{\sqrt{1+t}}\\

s'(3)&=\color{red}{\frac{1}{2}\frac{m}{s}}

\end{align}

$\textit{think this is ok, but naybe sugestions}$