(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A spacecraft with its astronaut has a total mass at rest of 10^5 kg. The astronaut is to travel to a star 10 light years away at a speed such that she only ages 1 year in her frame of reference

a) the quantity 1-v/c where v is her speed with respect to earth is?

b) the total energy required to accelerate the spacecraft from rest to this velocity in units of 10^22 Joules is?

2. Relevant equations

3. The attempt at a solution

1 year = 356 days = 1.89 x 10^9

I tried converting 10 light years into km

Then tried using v = d/t to find V

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# Homework Help: Interstellar space travel and reference frames

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