suppose a spaceship heading directly away from the Earth at 0.75c can shoot a canister at...

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suppose a spaceship heading directly away from the Earth at 0.75c can shoot a canister at...

suppose a spaceship heading directly away from the Earth at 0.75c can shoot a canister at 0.65c relative to the ship. Take the direction of motion towards Earth as positive. v1= 0.75 c v2= 0.65 c

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? (units for answer in mu/c=...)

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

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Answer 1

Answer #1

a) V;=0.75C, V2=0.650 V= V2-V 1- ViV2 0.65C-0.750 1 - (0045) (0.65) -01C 0.5125 C2 - +0.195 l seil der b) v= VHV I+ Viva 0.65

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