A Spaceship Is Moving in a Straight Line Away from Earth

question 92

Multiple Choice

A spaceship is moving in a straight line away from Earth at 0.80c, measured relative to Earth. It launches a missile that moves away from the spaceship in the forward direction at 0.60c, relative to
The ship. Relative to Earth, what is the speed of this missile?

• A) c
• B) greater than 0.80c but less than c
• C) greater than c but less than 1.4c
• D) 1.4 c