You are standing still on a spacecraft that is traveling toward the Sun at 0.25c. a) How fast are you moving relative to a person that is on Earth observing your spacecraft's motion? b) You get out your radar gun and point it at the Sun. What speed do you measure for sunlight, given that your spacecraft is travelling toward the Sun at 0.25 c? c) At what speed, relative to c, do relativistic effects become significant?

You are standing still on a spacecraft that is traveling toward the Sun at 0.25c. a) How fast are you moving relative to a person that is on Earth observing your spacecraft's motion? b) You get out your radar gun and point it at the Sun. What speed do you measure for sunlight, given that your spacecraft is travelling toward the Sun at 0.25 c? c) At what speed, relative to c, do relativistic effects become significant?

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