# Motion (rest/velocity/acceleration) vs Time

Fernando Freire
Why Space/TIME? I feel Motion affects Time, not the contrary. Thanks for claritication (no Math please).

Mentor
Why Space/TIME?

This question is much too vague to answer.

I feel Motion affects Time, not the contrary.

I don't understand what you mean by this.

russ_watters
Why Space/TIME?
It's just spacetime, or space-time if you prefer. Because space and time being parts of a united whole is an interpretation of the mathematics following from Einstein's postulates. Further testable implications of the postulates have been thoroughly tested and match experiment every time.
I feel Motion affects Time, not the contrary.
Feel whatever you like. Science deals in assumptions (as few as possible), the logical implications thereof, and whether or not those implications match experiment. Relativity is outstandingly successful in that regard.

Fernando Freire
This question is much too vague to answer.

I don't understand what you mean by this.
Thank you. Sorry.

Mentor
2021 Award
Why Space/TIME? I feel Motion affects Time, not the contrary. Thanks for claritication (no Math please).
Neglecting the completely irrelevant feeling, the equation velocity=distance/time does not imply any cause and effect relationship whatsoever. It says only that they are equal, not that one caused the other.

That said, I think it is pretty obvious that motion does not cause time, but it seems to be an idea that has a lot of appeal to some people for reasons that I don’t understand.

russ_watters and PeroK
Fernando Freire
Neglecting the completely irrelevant feeling, the equation velocity=distance/time does not imply any cause and effect relationship whatsoever. It says only that they are equal, not that one caused the other.

That said, I think it is pretty obvious that motion does not cause time, but it seems to be an idea that has a lot of appeal to some people for reasons that I don’t understand.

Correct me if I am wrong: Time only occurs when Energy is Matter. And motion seems to affect it since it stops at C as far as I know.

weirdoguy
Time only occurs when Energy is Matter.

This does not make any sense. Sorry, but if you think that that's in the box, then you are simply wrong.

In physics time is what a clock measures. Energy is a property of matter and there are many other properties that are important. Start with that.

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Correct me if I am wrong: Time only occurs when Energy is Matter. And motion seems to affect it since it stops at C as far as I know.
This isn't even wrong. It's just words flung together without regard to their meaning. The only place to start on correcting it is from the beginning - I recommend Taylor and Wheeler's Spacetime Physics.

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russ_watters
Mentor
2021 Award
Time only occurs when Energy is Matter.
What experiment could you perform to determine if this is correct?

Mentor
This isn't even wrong. It's just words flung together without regard to their meaning.
The first part, yes -- the second part is just the typical first-reaction misunderstanding of SR time dilation.

Ibix