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Consider a universe in which Einstein's postulates and special relativity are valid but the speed of light c = 200 miles/hour. A Toyota with proper length L and a Bentley with proper length 3L are racing. The Toyota moves at a speed c=3 with respect to a xed radar gun. In the Toyota's rest frame, both cars have the same length. What is the speed v of the Bentley with respect to the radar gun? show your work please.

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