Particle $1$ has mass $1\mathrm{.}25{10}^{-4}kg$ and charge $-1\mathrm{.}00C$ and is fixed in place. Particle $2$ has mass $6\mathrm{.}50{10}^{-5}kg$ and charge $+2\mathrm{.}50C.$ Particle $2$ is released, at rest, $0\mathrm{.}250$ m from particle $1.$ How fast will particle $2$ be moving when it is $0\mathrm{.}100$ m from particle $1?$