In the old west, a cowboy would put their ear on the railroad track to determine if a train was coming. using this method, they could tell if the train was coming sooner than just listening for the train. a good explanation for this would be that a) sound and vibrations travel faster through gases than solids. b) sound and vibrations travel faster through solids than gases. c) sound and vibrations dissipate faster in solids than in liquids or gases. d) sound and vibrations are more concentrated in solids than in liquids or gases.