A charge between two plates

Plates 5.0 cm long · uniform field E = V/d from + to − · F = qE · gravity negligible

Set up the plates and the particle
Side view
Two parallel plates with a charged particle's path between them
Between the plates
Field strength E = V/d
Force on the particle F = qE
Acceleration a = F/m
Result of the last shotnot fired yet

Choose a particle and press Fire.