The 500 M-Long Spaceship Springbrake Is at Rest on the Planet

question 33

Multiple Choice

The 500 m-long spaceship Springbrake is at rest on the planet Hitest for refueling. Another spaceship, Summerbrake, passes parallel to Springbrake at 0.600c. The crew on Springbrake measure the length of Summerbrake as it passes and find that the length they measure is exactly the same as the known 500 m rest length of Springbrake. If Summerbrake were at rest next to Springbrake, its length would then be measured to be

• A) 180 m.
• B) 320 m.
• C) 500 m.
• D) 625 m.
• E) 781 m.

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