Speed of Electron Released from Rest in Weak Electric Field

[swimmer052005]

Homework Statement

An electron is released from rest in a weak electric field given by vector E = -3.00 10-10 N/C jhatbold. After the electron has traveled a vertical distance of 1.4 µm, what is its speed? (Do not neglect the gravitational force on the electron.)

Homework Equations

The Attempt at a Solution

We haven't been taught this, so any help on how to do it would be wonderful.

 

[rl.bhat]

What is the net force acting on the electron in the electric field?
Work done = F*d = 1/2*m*v^2.
From this find v.