Physics: An astronaut travels to a star system 5.3 ly away at a
Physics: An astronaut travels to a star system 5.3 ly away at a speed of 0.90 c
Subject: Physics / General Physics
Question
An astronaut travels to a star system 5.3 ly away at a speed of 0.90 c . 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?
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Part B How long does the journey take according to the astronaut?
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?
