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Does Inertia Depends On Mass? Can it be apply to massless objects l Newton's Law of Inertia


What Actually Newton's Law of Inertia Is and Interpretation of its Significance?

Physics is all about study of nature and natural phenomenon. Understanding physics is what if we understand “Universe” which generalizes overall matter and energy.
Now, matter can be on a different scale i.e.., macroscopic level and microscopic level having definite mass initially. But with the advancement in science we found that there are still particles which are massless called elementary particles like Gauge, Bosons, Photons etc.
Sir Issac Newton’s first law of motion explains the state of object having mass under effect of force, famously known “Law of Inertia”. Since “massless particles”, move with speed of light (c) like Photon.

It means that they have momentum even though not having definite mass. In that sense Inertia is also which generalizes momentum and its conservation.
It means photons being massless possess inertia and thereby it can be stated that inertia can be applicable for massless particle.
Now can we relate Law of Inertia in a state called sub-conscious mind or more efficiently when we dream? 

Its obvious fact that dream is a form of energy and has no mass, having no speed restriction in state and continues to be in state (subconscious state of mind of person) until any external factor ceases it.

What's your opinion?

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