Can you give me the equations to describe this?as far as a real world scenerio goes, I think any force you generate on the ship by throwing the brick would get bled off as heat. Think of how much mass has to be effected as a result of this. every intermolecular bond has to register this push. and every intermolecular bond will turn a little bit of this force into heat as they strech and contract ever so slightly. I think the net effect on the ship would be zero. I dunno if you are looking for this kind of answer or an ideal one. not trying to be a wang . Just giving another perspective.
kind regards