$(10$ pts$)3.$ A positive point charge $q_1=+6\mathrm{.}00{10}^{-9}C$ is held fixed at the origin. A small particle with mass $m_2=5\mathrm{.}00{10}^{-3}kg$ and positive charge $q_2=+3\mathrm{.}00{10}^{-9}C$ is placed on the $x-$axis at $x=+0\mathrm{.}200m.$ The particle is released from rest and moves along the $+x-$axis. What is the speed of the particle when it is very far away from $q_1?$