Question
Asked Dec 27, 2019
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A star is 5.00 ly from the Earth. At what speed must a spacecraft travel on its journey to the star such that the Earth–star distance measured in the frame of the spacecraft is 2.00 ly?

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Expert Answer

Step 1

Given:

Distance between earth and star (L) = 5.0 light year.

Earth star distance measured if the space craft move with velocity (v) is (L’) = 2.0 light year.

Step 2

The relation between distance a...

Physics homework question answer, step 2, image 1
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