A Spaceship Is Moving in a Straight Line Away from Earth

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