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Use this tag for questions related to how objects move relative to other objects dependent on your frame of reference, and how this applies to special relativity.
44
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12
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Is there any physical evidence for motion?
Let's say that we have 2 tennis balls in space, one being in motion (say, pushed by an astronaut), and the other one still.
If we could take a snapshot of both tennis balls, would there be any eviden …
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vote
11
answers
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Are time and motion the same thing?
My question might be completely irrelevant or stupid - sorry in advance if it's the case. I'm kinda lost with the time and space notions, and even formulating adequate questions is hard at that point. …