spaceship flies past earth at a speed of 0.990c. A crew member on board the spaceship measures its length, obtaining the value 400 m. What length do observers measure on earth?
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A spaceship is moving at a speed of 0.990c relative to the Earth. The length of the spaceship as measured by a crew member on board (in the spaceship's rest frame) is 400 meters. We need to find the length of the spaceship as measured by observers on Earth, taking Show more…
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