In an Earth reference frame, a star is 76 light-years away. How fast would you have...
In an Earth reference frame, a star is 76 light-years away. How fast would you have to travel so that to you the distance would be only 39 light-years?
Homework Answers
sqrt(1-beta^2) = L1 / L2 = 39/76 = 0.513
(1-beta^2)= 0.2634
beta^2= 0.736
beta = sqrt(0.736) =0.858
v = 0.858 C where C = 3e8 m/s
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