A tag for questions about rotational motion, including angular velocity and angular acceleration.

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Paradox of the Relativistic Record Player [duplicate]

Possible Duplicate: Invariant spacetime - distance - Circular Motion This is a question that I thought up a few years ago when I was taking mechanics. I asked the professor but didn't ...
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How is it that angular velocities are vectors, while rotations aren't?

Does anyone have an intuitive explanation of why this is the case?