The accepted value for the speed of sound in air is 330 m/s. distance ( s ) is measured in metres (m)Īn observer 400 m away records a 1.2 s time difference between seeing the hand signal and hearing the bang of the starting pistol.speed ( v ) is measured in metres per second (m/s).The speed of sound can be calculated using the equation: A distant observer stood 400 metres (m) away records the time between seeing the action (the light reaches the time keeper immediately) and hearing the sound (which takes more time to cover the same distance). For example, a person fires a starting pistol and raises their hand in the air at the same time. Light travels much faster than sound through air. The vibrating particles pass the sound through to a person's ear and vibrate the ear drum. ![]() When sound is created, the air particles vibrate and collide with each other, causing the vibrations to pass between air particles. The air is made up of many tiny particles. At lower pressures they are merely further apart.Measuring the speed of sound in air and water
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