What is the proper length of the rocket

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Reference no: EM13260005

When traveling past an observer with a relative speed v, a rocket is measured to be 9.10m long. When the rocket moves with a relative speed 2v, its length is measured to be 5.10m.

A. What is the speed v?

B. What is the proper length of the rocket?

Reference no: EM13260005

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