Two spaceships approach earth with equal speeds as measured, Physics

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Two spaceships approach earth with equal speeds as measured

Two spaceships approach Earth with equal speeds, as measured by an observer on Earth, but from opposite directions. A meterstick on one spaceship is measured to be 60 cm long by an occupant of the other spaceship. What is the speed of each spaceship, as measured by the observer on Earth?

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Physics: Two spaceships approach earth with equal speeds as measured

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Physics: Two spaceships approach earth with equal speeds as measured

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