A Spaceship Is Moving Away from an Asteroid with a Speed

A spaceship is moving away from an asteroid with a speed of 0.80c relative to the asteroid.The spaceship then fires a missile with a speed of 0.50c relative to the spaceship.What is the speed of the missile measured by astronauts on the asteroid if the missile is fired toward the asteroid?

A) 0.30c
B) 0.50c
C) 0.93c
D) 1.3c
E) 0.65c

Correct Answer:

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