The world is not a collection of things, it is a collection of events. The difference between things and events is that things persist in time; events have a limited duration. — Carlo Rovelli, ‘The Order of Time’
You all deny/critique that <all objects are in relative motion>
If you all are right then there is must be an object at absolute rest.
Can you prove that? — TheMadFool
There is no need to prove that. The person who claims that all motion is relative needs to prove that there is no such object as absolute rest. Until it is proven that all motion is relative, the critique of this premise is justified. — Metaphysician Undercover
Ok. So don't come to this forum for help with your physics assignments.
Bloody hell. What a mash. — Banno
There is a need to prove that there exists an object in absolute rest because there are only two contradictory possibilites:
1. An object in absolute rest
or
2. Everything in relative motion
Since you're denying 2 then 1 must be the case. So, prove it. — TheMadFool
Let's try again...
Suppose there is an object, A, in absolute rest i.e. at rest relative to everything else.
But we know that there exists at least 2 objects in relative motion of the displacement kind i.e. the distance between them change e.g. a car moving towards you.
Is it then possible that A is at rest (absolute) relative to both the car and you??
There are three points: object A, the car (B) and you (C) forming a triangle.
We know that the distance BC is changing. Can the distance AC and AB remain constant i.e. can A be at rest relative to both B and C?
I think it's impossible. The pythagorean theorem proves it. — TheMadFool
You ought to see that this is nonsense. "Absolute rest" would be the standard by which all motions are measured. Therefore everything would be in motion relative to "object A" (absolute rest), unless there was something else which was at absolute rest. Only things at absolute rest would be unchanging relative to absolute rest, everything else would be changing relative to absolute rest. — Metaphysician Undercover
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