Hi I'm learning about The chainrule, and I understand how to apply the chain rule on various problems, but there is a problems I don't understand how works:(adsbygoogle = window.adsbygoogle || []).push({});

1) The book I'm reading writes acceleration as

a=v*(dv)/dt

And IT argues that v=ds/dt and a=dv/dt (which i understand)

So therefore by applying the chain rule we get

a=dv/ds*ds/dt =v*dv/ds.

The part i don't understand is: How did we get dv/ds by applying the chain rule? What does the derivative of Velocity with respect to distance even men? Usually it's ds/dv and not dv/ds.

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# The Chain rule and acceleration, need some help

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