How fast are the photons moving relative to the earth

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Reference no: EM13694781

Problem: A spaceship fires a laser cannon (i.e. photons which move at the speed of light=c) in the forward direction. If the spaceship is moving away from the earth at 20% the speed of light (0.2c),

Part A: How fast are the photons moving relative to the earth?

Express your knowledge to solve the above problem. Thanks.

Reference no: EM13694781

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