UIN (1) (8 pts) As a spaceship heads directly to Earth at a velocity of 0.8c, it sends a radio signal to Earth. When those radio waves arrive on Earth, how large is their velocity relative to Earth? V=?
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The speed of light is constant in all inertial frames of reference, according to the postulates of special relativity. Therefore, the velocity of the radio waves relative to Earth is $c$. Show more…
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