A proton is released at rest, $2\mathrm{.}0cm$ distance from an infinitely long, uniformly charged straight line. It is observed that at the instant of release, the proton experiences an electric force of $1\mathrm{.}44*{10}^{-18}N$ directed away from the line.

Calculate the speed of the proton when it reaches $6\mathrm{.}0$ cm away from the line. $(20$ points$)$