ex2d with physics ?

I want to make side scrolling game with ex2d ,In My scene I have two sprite objects,one for land and one for the player, I gave them mesh physics so they interact with each other ,and i give the player a rigid body so It had gravity force ,but nothing seem to work ,do any body have a tutorial or an advice how to implement physics to complete my game?

this is more simple whit playmaker! try it!