In ordinary physics there is a mystery as to Mass and Inertia. In this DM model two atoms of force can change one atom of momentum. The momentum of a particle is related to the vector sum of the momentum atoms. Momentum and energy are much intertwined, as the presence of momentum creates energy. The amount of motion that a momentum atom can impart to a particle is inversely related to the amount of energy in the particle. All of the elements of the particle, including the informational representations of momentum and energy, must be moved along with the rest of the particle. As a particle gains speed, it gains energy and the force needed to accelerate it increases as the energy increases due to relativistic effects.
