$[6]$ A $12\mathrm{.}0$ kg object moves along the x $-$axis experiencing the net force shown in the diagram below. The particle's speed at $x=0$ is $3\mathrm{.}30\frac{m}{s}.$ The vertical intercept occurs at $(0m,5\mathrm{.}0N)$; the horizontal intercept occurs at $(15\mathrm{.}0m,0N)$ and the two kinks occur at $(5\mathrm{.}0m,20\mathrm{.}0N)$ and $(10\mathrm{.}0m,20\mathrm{.}0N).$

What is the object's speed at

A$.x=5\mathrm{.}00m?$

B$.x=15\mathrm{.}00m?$