I4 You travel to a star 185 light-years from Earth at a speed of 2.90×108 m/s...

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Question

I4 You travel to a star 185 light-years from Earth at a speed of 2.90×108 m/s . Part A What do you measure this distance to be? l = ??? ly

science physics

Answer 1

Answer #1

We know that:

l = l₀ xsqrt(1-v²/c²)

c = 3 x 10⁸

Substitute given information as follows:

l = 185 x sqrt[(1-2.9 x 10⁸)²/(3 x10⁸)²]

therefore:

l =47.367 ly

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Answer 2

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