1. ## Rearranging formula

Ok well this one has well and trluy stumped me so i'm here to ask for help

p=(m*v)/SQRT(1-(v^2/c^2))

And i need to make v the subject of the equation, everytime i end up with v/v on one side, so if anyone can help i'd be forever in you debt.

2. Originally Posted by RobertDeniro
Ok well this one has well and trluy stumped me so i'm here to ask for help

p=(m*v)/SQRT(1-(v^2/c^2))

And i need to make v the subject of the equation, everytime i end up with v/v on one side, so if anyone can help i'd be forever in you debt.

$P^2\left(1 - \frac{v^2}{c^2}\right) = m^2 v^2$
$\Rightarrow P^2 = m^2 v^2 + \frac{P^2v^2}{c^2}$
$\Rightarrow v^2 = \dfrac{P^2}{m^2 + \frac{P^2}{c^2}}$