Question

A wire forming a circle lies fixed in the XY plane of the frame S
' which moves uniformly
with respect to the S frame along the common X-axis. An observer fixed in the S
frame sees the wire as an ellipse with eccentricity e = 0.667. Find the relative velocity
between the frames.​

Answer 1

Specifically, Special Relativity showed us that space and time are not independent of one another but can be mixed into each other and therefore must be considered as the same object, which we shall denote as space-time. The consequences of space/time mixing are: time dilation. and length contraction.

Answer 2

answer is in attachment