An electron moves through a uniform electric field

E $=(2\mathrm{.}80+5\mathrm{.}50)$ V$/$m

and a uniform magnetic field

B $=0\mathrm{.}400$ T$.$

Determine the acceleration of the electron when it has a velocity

v $=9\mathrm{.}0$ m$/$s$.$

$($Give each component in m$/$s$2.)$

ax$=$ m$/$s$2$ay$=$ m$/$s$2$az$=$ m$/$s$2$

$($b$)$

What If$?$ For the electron moving along the x$-$axis in the fields in part $($a$),$ what speed $($in m$/$s$)$ would result in the electron also experiencing an acceleration directed along the x$-$axis?

m$/$s