Speed of Sound

• Apparatus: Two observers, Gun, Stopwatch.
• Procedure:

  • Two observers are set apart at a known distance.
  • One observer has the gun, the other has the stopwatch.
  • Observer A fires the gun, Observer B starts the stopwatch when he sees the puff of smoke.
  • Observer B stops the stopwatch when he hears the sound and the time is noted.
  • Speed =DistanceTimeSpeed =TimeDistance​ applied.
  • The observers swap positions and repeat the experiment.
  • The values are averaged and the speed of sound is obtained.