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Ameter stick a hurtles through space at a speed v = 0.25c relative to you, with its length aligned with the direction of motion. you stand on earth and have another meter stick b with its length aligned with the direction of motion of meter stick a. you measure the length of meter stick a to be 1 m. what is the length of meter stick b, l_b, as seen in the rest frame of meter stick a?
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