I'm trying to develop simple computational tools to study the dynamics of electric particles. I asked a question about my implementation of particle dynamics using differential equations derived from Coulomb's law.
On Computational Science SE, I was told my equations are correct, but on StackOverflow I was told Coloumb's Law doesn't hold for particles in motion.
This material is not covered in my physics class and due to the special case (relative to what I have learned) of particles in motion I am hoping someone can explain what the kind answerer on Stackoverflow might have meant?