I have a textbook with the equation below. The equation is a derivation for relativistic kinetic energy.(adsbygoogle = window.adsbygoogle || []).push({});

[tex]KE = \int_{0}^{s} \frac{d(mv)}{dt}ds = \int_{0}^{mv} v d(mv)[/tex]

I should really know this, but I don't. How do I get from the second expression to the third?

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# Changing limits on an integral

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