Calculating vertical displacement of an electron (millikan's experiment)

[KWL]

this one question has got me confused...any help/hint would be appreciated.

an electron is traveling horizantally at a speed of 8.7*10^6 m/s enters an electric field of 1.32*10^3 N/C between two horizantal plates (shown below)
+ ___________________

e- ---->

- ___________________

The horizantal plates are each 14.0 cm and are distanced 8 cm from each other.

I need to calculate the vertical displacement of the electron as it travels between the plates.

 

[Tide]

The electron is accelerated at a constant rate by the electric field. It's a simple matter to find its trajectory - mass times acceleration = charge times e-field.

 

[niehls]

if it helps, think of it as a regular projectile trajectory with the only force acting on the electron being vertical.The horizontal component of the speed stays the same, and it's accelerated towards the positively charged plate. the acceleration is given by Newton's second law according to Tide's post.