A Spaceship Is Observed from the Earth to Be Moving

question 42

Multiple Choice

A spaceship is observed from the Earth to be moving toward a star at a speed of 0.80 c.If the distance from the spaceship to the star is 1.6 ly as measured from earth,how far is the star as measured from the moving space ship?

• A) 2.1 ly
• B) 1.9 ly
• C) 1.6 ly
• D) 1.2 ly
• E) 0.96 ly

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