A spacecraft with a proper length of 400 m passes by an observer on the Earth....

 

 

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A spacecraft with a proper length of 400 m passes by an observer on the Earth. According to this observer, it takes 0.810 us for the spacecraft to pass a fixed point. Determine the speed of the spacecraft as measured by the Earth-based observer. A spacecraft with a proper length of 400 m passes by an observer on the Earth. According to this observer, it takes 0.810 us for the spacecraft to pass a fixed point. Determine the speed of the spacecraft as measured by the Earth-based observer.

Answer rating: 100% (QA)

We can use the concept of time dilation from special relativity to determine the speed of the spacec... View the full answer