Velocity Addition

Score: 1 Point

A spaceship is moving away from the Earth at a speed of $0.80c$ when it fires a missile parallel to the direction of motion of the ship. The missile moves at a speed of $0.60c$ relative to the ship. What would be the speed of the missile as measured by an observer on the Earth?

Your answer should be something like $0.5c$, write only $0.5$ in the box.