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Question: 

A person on a rocket traveling at 0.40c (with respect to the Earth) observes a meteor come from behind and pass her at a speed she measures as 0.40c. How fast is the meteor moving with respect to the Earth?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$0.69c$

Giancoli 7th Edition, Chapter 26, Problem 47

(1:57)

Chapter 26, Problem 47 is solved.

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