Suppose a spaceship heading directly away from the Earth at 0.75c can shoot a canister at 0.35c relative to the ship

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Suppose a spaceship heading directly away from the Earth at 0.75c can shoot a canister at 0.35c relative to the ship

Suppose a spaceship heading directly away from the Earth at 0.75c can shoot a canister at 0.35c relative to the ship. Take the direction of motion towards Earth as positive.

Randomized Variables

V1 = 0.75c

V2 = 0.35c

Part (a) If the canister is shot directly at Earth, what is the ratio of its velocity as measured on Earth to the speed of light?

Part (b) What about if it is shot directly away from the Earth (again, relative to c)?

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Suppose a spaceship heading directly away from the Earth at 0.75c can shoot a canister at 0.35c relative to the ship

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