Suppose a spaceship A and a spaceship B are moving towards each another. Spaceship A fires a missile at spaceship B. The speed of the missile, relative to spaceship A, is . The speed of the missile, relative to the spaceship B, is . What is the relative velocity of the two spaceships?
Two planets are on a collision course, heading directly toward each other at . A spaceship sent from one planet approaches the second at as seen by the second planet. What is the velocity of the ship relative to the first planet?
Suppose a spaceship heading directly away from the Earth at can shoot a canister at relative to the ship.
What is the velocity of the canister relative to Earth if it is shot directly at Earth?
What is the velocity of the canister relative to Earth if it is shot directly away from Earth?
Suppose the speed of light were only m/s. A jet fighter moving toward a target on the ground at 800 m/s shoots bullets, each having a muzzle velocity of m/s. What are the bullets’ velocity relative to the target?