physics
posted by sue on .
An electron starts at rest. Gravity accelerates the electron in the negative y direction at 9.80 m/s2 while an electric field accelerates it in the positive x direction at 3.80×106 m/s2. Find its velocity 2.45 s after it starts to move.

help please. thankyou.

vf=a*time
Vf=(9.8m/s^2+3.80m/s^2)*2.45 
are you sure? because this is a acceleration in two dimensions problems. the answer is supposed to be in the form of ( , )m/s.