Please See: The Motion
If there is only one object in the universe, we cannot talk about its relative motion, but we can still talk about its intrinsic motion. The intrinsic motion of an object would be a property just like consistency.
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Definition of INTRINSIC MOTION
In a solid object, the internal structure is pretty fixed. We may say that the intrinsic motion of a solid object is zero because its center of mass is fixed within that structure. But in a fluid object, the internal structure is not so fixed, and its center of mass may shift around a bit. So, it has some intrinsic motion. We may say that the intrinsic motion of a substance is related to the fluidity of its internal structure.
As the consistency of substance decreases, the substance expands and becomes more fluid. This can be seen in an atom, where the electronic region is much more fluid compared to the nuclear region because the consistency of the electronic region is much less compared to the nuclear region. The increased fluidity of the electronic region translates into greater intrinsic motion.
A black hole at the center of a galaxy has extremely large mass, and it is not fluid at all; whereas, light has literally no mass, and it is completely fluid. Therefore, the speed of the black hole is practically zero compared to the speed of light, which is 3 x 108 meters / second.
In the material region itself, we see stars in a galaxy revolving around the black hole at its center; and the planets in a star system revolving around its central star. This is because stars have lesser mass than the central black hole; and the planets have lesser mass than their central star.
There are many influences on the motion of a free body; but a general conclusion may be drawn that the lesser is the mass, the greater is the natural speed of a singlefree body due to greater intrinsic motion. This may not be so for the many rocks in the ring of Mars; but it would so for an isolated comet traveling in the heavens.
On a large scale, there appears to be an inverse relationship between the consistency of substance and its intrinsic motion or fluidity. The higher is the consistency of substance, the slower is its intrinsic motion.
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Notes
In physics, one generally considers the motion of a point particle to simplify mathematics. A point particle is derived from the idea of the center of mass of a solid object. Therefore, inherent to the use of a point particle is the assumption that the motion is being applied to a solid object. For a point particle, the intrinsic motion would be zero and the consistency would be infinite.
The problem with the Bohr’s model of atom immediately becomes obvious when both the nucleons and the electrons are treated as point particles, while they are vastly different in their consistency and intrinsic motion. This anomaly gave rise to the Heisenberg’s uncertainty principle. The probability function is trying to address the phenomenon of intrinsic motion.
As the consistency of an object approaches infinity, its intrinsic motion approaches zero. This would be the state of absolute rest. A black hole at the center of a galaxy would closely approximate the state of absolute rest.
The definition of motion as the “change of position in space” applies to solid objects and point particles only. It is a matter-centric concept.
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Key Misconception
A key misconception is that the relative motion describes the actual motion of substance. It is obvious that the motion of Earth is not measured by its speed relative to light, or to the Sun. The actual motion is described by the intrinsic motion of substance.
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More Misconceptions
You may discover more misconceptions on your own, if you contemplate on each sentence of the above definition with mindfulness. Please see:
Or, you may end up improving upon this definition.
Good luck!
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