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Question: 

A spaceship leaves Earth traveling at 0.65c. A second spaceship leaves the first at a speed of 0.82c with respect to the first. Calculate the speed of the second ship with respect to Earth if it is fired

  1. in the same direction the first spaceship is already moving,
  2. directly backward toward Earth.

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

Quick Answer: 
  1. $0.959c$
  2. $0.364c$

Giancoli 7th Edition, Chapter 26, Problem 49

(2:23)

Chapter 26, Problem 49 is solved.

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