A spaceship moves away from the Earth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to the spaceship.
(a) What is the velocity of the missile measured by observers on the Earth if the missile is fired away from the Earth?
(b) What is the velocity of the missile measured by observers on the Earth if the missile is fired toward the Earth?

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The Answer of A spaceship moves away from the Earth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to the spaceship.
(a) What is the velocity of the missile measured by observers on the Earth if the missile is fired away from the Earth?
(b) What is the velocity of the missile measured by observers on the Earth if the missile is fired toward the Earth?

A Spaceship Moves Away from the Earth with a Speed