SOLUTION: Speed of light is 3 x10^8 m/s. At this speed, how long a stars light will take if the star is 8 light years away?

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Question 1064927: Speed of light is 3 x10^8 m/s. At this speed, how long a stars light will take if the star is 8 light years away?
Found 3 solutions by josgarithmetic, ikleyn, Alan3354:
Answer by josgarithmetic(39616) About Me  (Show Source):
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How far, meters, does light travel in 1 year?



3%2A3600%2A24%2A365.25%2A10%5E8%2Ameters, for ONE year.
About 9.46%2A10%5E15 meters for one year.

Compute that for 1 year, and maybe keep one or two significant figures.
Now, what is 8 times bigger (for your question of 8 light years)?

Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.
The answer is just in the condition.

No additional calculations are needed.

8 light years.


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
8 years.
It's the definition of a light-year.