My idea is simple.
I wonder. We know force fields create forces on the body like gravity, F = mg. But could a force create a force field? My guess is that momentum defined as p = m*v. Is just the results of a summation of forces from a force field acting on the body, m.
The force field I’m guessing is a slim fit one. Acting only on the body. So for the body not to accelerate the field has to balance itself out after a some time. Storing energy as kinetic potential.
Maybe its just a bunch of balancing forces acting on atom size pieces of the body. Like dF -> dm <- dF throughout the body.
// Per Lindholm