Posted by Jake on .
A passenger on an interplanetary express bus traveling at v = 0.94c takes a sevenminute catnap by his watch. How long does the nap last from your vantage point on a fixed planet?

Physics Help!! 
Elena,
t =tₒ/sqrt(1 β²) = 7/ sqrt(1 0.94²) =
= 20.5 min