An astronaut travels to a star system 4.1 lyly away at a speed of 0.90 cc . Assume that the time needed to accelerate and decelerate is negligible.
Part A
How long does the journey take according to Mission Control on earth?
Express your answer in years.
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Part B
How long does the journey take according to the astronaut?
Express your answer in years.
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years |
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Part C
How much time elapses between the launch and the arrival of the first radio message from the astronaut saying that she has arrived?
Express your answer in years.
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years |
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