Question

Physics help! Can't figure out last 2

IP Is it possible for you to travel far enough and fast enough so that when you return from a trip, you are younger than your stay-at-home sister, who was born 5.0 y after you? Suppose you fly on a rocket with a speed v = 0.99 c for 1 y. according to the ship's clocks and calendars. How much time elapses on Earth dunning your 1-y trip? Express your answer using two significant figures. If you were 25 y old when you left home and your sister was 20. what is you age when you return? Express your answer using two significant figures. What is your sister's age when you return? Express your answer using two significant figures

Answer 1

(c)

During jouney, the clock with you noted one year.

So your age is 25 y + 1 y = 26 years

(d)

During jouney, your sister clock noted 7.08 years.

So your sister age is 20 y + 7.1 y = 27.1 years