A proton is initially at rest. After some time, a uniform electric field is turned on and the proton accelerates. The magnitude of the electric field is $1\mathrm{.}56105$ N$/$C$.$

$($a$)$ What is the speed of the proton after it has traveled $5\mathrm{.}00$ cm$?$ m$/$s 

$($b$)$ What is the speed of the proton after it has traveled $50\mathrm{.}0$ cm$?$