Obtain how long does david measure the train car to be

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Reference no: EM13518692

A very fast-moving train car passes you, moving to the right at 0.50c. You measure its length to be 12m . Your friend David flies past you to the right at a speed relative to you of 0.80c.

How long does David measure the train car to be?

Reference no: EM13518692

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