Reference: Postulate Mechanics
The Inertia
INERTIA is the resistance that is felt when something is pushed. If something offers no resistance then there can be no push either. Therefore, for force to be manifested there must be inertia opposing it. Both force and inertia are the manifestation of the consistency of substance.
When the force upon an object and its inertia are in exact balance, there exists a uniform state of motion, or rest, in which there is no acceleration. The fact that the speed of light is constant means that it has inertia that is balancing any electromagnetic force acting upon it. If there is no inertia, the speed shall be infinite.
A body with infinite consistency shall have infinite inertia and it would not be displaceable from its location. We may assign it zero absolute motion. As the consistency reduces, the inertia also reduces and some displacement would become possible. This shall bring about a configuration similar to that of a rotating galaxy. We can thus show an inverse relationship between consistency and absolute motion.
When an object is accelerated to a higher speed with the application of an external force, and the external force is removed; then the inertia of the object will start acting to bring the object back to its original balanced speed. If the inertia is also reduced in the process, then the higher speed shall be maintained.
Both Force and Inertia are manifestations of consistency.
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