An Earthbound Radar Monitors a Spaceship Moving at 0

question 2

Multiple Choice

An earthbound radar monitors a spaceship moving at 0.9c. The crew of this first ship monitors a second ship following them at 0.8c with respect to them. What is the speed of the second ship as recorded by the earthbound radar?

• A) 0.988c
• B) 0.180c
• C) 0.850c
• D) 0.367c
• E) 1.70c

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