i was looking at the lorentz dilation and contractions for SR. My books says they are [itex]\grave{l}[/itex]=l[itex]\gamma[/itex] and that [itex]\grave{t}[/itex]=[itex]\frac{t}{\gamma}[/itex] .what i dont understand is that the velocity in the unprimed system is then [itex]\frac{l}{t}[/itex] but in the primed system its [itex]\frac{l\gamma^{2}}{t}[/itex] which is not equal to the value in the unprimed system. Shouldnt the velocity in the two frames be the same?(adsbygoogle = window.adsbygoogle || []).push({});

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# Calculating the velocity in different inertial frames

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