Question

An astronaut travels to a star system 4.1 lyly away at a speed of 0.90 cc...

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.

t =

nothing

years

SubmitRequest Answer

Part B

How long does the journey take according to the astronaut?

Express your answer in years.

t =

nothing

years

SubmitRequest Answer

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.

t =

nothing

years
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