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A 'simple' Physics postulation...

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CatalinaWOW:

--- Quote from: vad on July 15, 2021, 10:32:31 am ---
--- Quote from: CatalinaWOW on July 15, 2021, 04:36:06 am ---Velocity can only be defined as a derivative or as an average over an interval.

--- End quote ---
What if we postulate the velocity, and define distance as integral of v dt? E.g. like SI defines meter.

--- End quote ---

Sure.  An integral is an average.  This can also be misinterpreted if you think of it incorrectly.  (There exist velocity histories for which the integral is zero over some interval.  The object is in the same place at the ends of the interval, hence there was no motion.  This is analogous to the original posters "conundrum".)

TimFox:
In my long post above, I pointed out that for this particular case, where the velocity is a linear function of time, if you calculate the average velocity over a symmetrical interval around any time, the average is independent of the length of the interval.

GlennSprigg:
O.P. here....   Oops!!, I think I opened Pandora's Box !!!   :scared:

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