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The speed of sound is the distance travelled during a unit of time by a sound wave propagating through an elastic medium. In dry air at 20 °C (68 °F), the speed of sound is 343.2 metres per second (1,126 ft/s). This is 1,236 kilometres per hour (768 mph), or about one kilometer in three seconds or approximately one mile in five seconds.

14 years ago. Rating: 3
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You need to very specific when you are asking the question relation to the science.

Since, the answer vary according to the provided conditions.

If you are trying to ask what is the speed of sound in air at NTP [Normal Temperature and Pressure], then its speed is 330 m/s .

Note: The speed of sound vary according to the density, temperature, humidity and direction of propagation of wind.

So be careful while asking such kind of question.

14 years ago. Rating: 0
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