Physics, 28.08.2020 21:01 livmoney8905

A) A spaceship passes you at a speed of 0.800c. You measure its length to be 31.2 m .How long would it be when at rest? B) You travel to a star 145 light-years from Earth at a speed of 2.90

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A) A spaceship passes you at a speed of 0.800c. You measure its length to be 31.2 m .How long would...