An electron moving parallel to the x axis has an initial speed of $5\mathrm{.}82106$ m$/$s at the origin. Its speed is reduced to $1\mathrm{.}06105$ m$/$s at the point x $=2\mathrm{.}00$ cm$.$

$($a$)$ Calculate the electric potential difference between the origin and that point.

Volts

$($b$)$ Which point is at the higher potential?

the originthe point x $=2\mathrm{.}00$ cm$$both have the same potential