In an experiment to determine the speed of sound, two observers, A and B, were stationed 5.0 km apart. Each was equipped with a gun and a stopwatch. Observer A heard the report of B's gun 15.5 s after seeing it's flash. Later, A fired his gun and B heard the report 14.5 s after seeing the flash. Determine the speed of sound and the component of speed of the wind along the line joining A to B. (Book says 334 m/s, 11.1 m/s)

1 answer

d = rt or r = d/t
speed one way = 5000/15.5 = ?
speed other way = 5000/14.5 = ?
average speeds and round to three significant figures. I get 333.7 which I would round to 334 m/s.

344.83 = sound with wind
-322.58 = sound against wind
22.25 = 2w
wind = 22.25/2 = 11.1 m/s