The discussion revolves around algebraic manipulations in physics, specifically involving expressions related to energy, mass, and momentum. The original poster presents a substitution involving the expression \(\frac{Ec^2}{mv}\) and explores its implications.
The conversation appears to be progressing with participants affirming the original poster's substitution approach. Some express curiosity about the implications of the substitution, while others confirm that substituting equal expressions is generally acceptable.
There is a mention of a specific context involving particles at a close distance and their momentum, which may influence the discussion but is not fully explored. The original poster's example is noted as being somewhat trivial, indicating a focus on understanding rather than deriving complex results.
help1please said:Suppose I had an expression, for the sake of this post
[tex]\frac{Ec^2}{mv}[/tex]
we know that [tex]c^2 = \frac{E}{m}[/tex] so can the above expression be substituted as
[tex]c^2 \frac{c^2}{v}[/tex]
Yes, yes, I know this result is very uninteresting, I was just making a quick example. Thank you!