1. The problem statement, all variables and given/known data Samantha, Tom, and Roberta are triplets. (i) Samantha is an airline pilot who ﬂies along a straight ﬂight path at 300 ms-1 for 80 hours per month (in her rest frame). How much younger will she be than her brother Tom (who handles baggage at the airport) when she retires after 30 years? 2. Relevant equations Time dilation formula 3. The attempt at a solution Use the time dilation formula t = γt0, where t is the time in the moving frame (that of Tom) and t0 is the time in the rest frame (that of Samantha). t0 = (3600*80*12*30) = 103680000 s v = 300 ms-1 Therefore, t = t0 + (51.84 ms), using the binomial expansion in the calculation. So, Samantha will be 51.84 ms younger when she retires after thirty years. Could you please confirm if I am right?