Here's a weird question where I don't quite know if length contraction or time dilation play a role.(adsbygoogle = window.adsbygoogle || []).push({});

Say I have 2 spaceships moving towards each other. rest length of spaceship A is La and spaceship B is Lb. The pilot in A determines that time taken for the spaceship B to traverse the length of A is T,. What is the relative velocity B wrt A?

Also, according to nose of B, what's the time taken to traverse the length of A?

The way i see it, in the frame of reference of A, the pilot A is at rest, hence relative vel, is La/Tx. Does time dilation play any role at all here?

Also, the second part is just Tx/gamma, right? where gamma can be find once we find the relative vel from part 1

Does this make sense?

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# Help in special theory, relative velocity

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