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Need to know the speed of the spaceship,
the answer is 1) 3) or 5)
This is all of the information given in the question, I asked my teacher and he gave me the hint to use this: . can you see how this factors in?
yes, the speed is
v= sqrt(3)/2 c
so use Lorentz formula
V = (sqrt(3)/2c + 1/3c)/(1+sqrt(3)/2*1/3) = 2.8 x10^8 m/s
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