Thread: Why does v represent speed in the KE Equation?

Originally Posted by ninja9578

Your equation is incomplete

KE = (mc^2 / (sqrt(1 - (v^2/c^2))) - mc^2

WTF?

http://www.google.com/#hl=en&source=...96bd6416f4afd8

Also, c represents specifically the speed of light.

Originally Posted by ninja9578

And usually if you want to represent speed in an equation you would use ds/dt or |v|. |v| is more common.

Absolute value of velocity? That's not necessarily speed.

I am talking about just a single variable.