basically things like metal, wich in the current version are not effected by physics such as gravity, wold instead operate like this:

when a particle of metal comes into contact with another particle of metal the two become bonded. bonded materials do noy move seperately from each other unless the temperature raises above boiling, or they are subjected to extreme tension, this would allow us to create things like rockets, the metal in the rocket would be bonded, and would not seperate, but at the same time the rocet as a whole cold move up and down, other materials that would be bondable cold be:

C4
all solid-non powders
liquids under pressure (surface water should be uneffected)

yes wilq, that's exactly what i am suggesting, it would also allow for you to build bullets and missies