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A reference frame is a particular coordinate system chosen to represent physical entities. The notion is most often used in special and general relativity to denote particular coordinates chosen on the spacetime manifold.

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Whether a ball thrown upwards will come back to the same position if we consider the effect ... [duplicate]

My friend and I had a huge debate about whether the trajectory of a projectile thrown upwards will be affected by the rotation of the earth. We finally concluded after detailed explanations that it sh …
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