A Spaceship Moves at a Speed of 0

Multiple Choice

A spaceship moves at a speed of 0.95 c away from the Earth. It shoots a star wars torpedo toward the Earth at a speed of 0.90 c relative to the ship. What is the velocity of the torpedo relative to the Earth? (The direction in which the spaceship moves is the positive direction.)

A) −0.34 c
B) 0.34 c
C) 0.060 c
D) −0.060 c
E) 0