The gas in a bipolar flow can travel as fast as 100 km/s. If the length of the jet is 3 ly, how long (in years) does it take for a blob of gas to travel from the protostar to the end of the jet? (Notes: 1 ly = 9. 5 ✕ 1012 km; 1 yr = 3. 2 ✕ 107 s)