A proton $($mass m$=1\mathrm{.}67$x$10^-27$ kg$)$ is being accelerated along a straight line at $4\mathrm{.}40$x$10^10$ m$/$s$^2$ in a machine. If the proton has an initial speed of $8\mathrm{.}60$ x$10^5$ m$/$s and travels $5\mathrm{.}40$cm$,$ what is $($a$)$its speed and $($b$)$ the incrrease in its kinetic energy??