300 metres per second
1,080 km/hSpeed · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Speed
Air & orbit
DISTANCE IN ONE SECOND
The quantity is exact as entered.
300 m in 1 s
Sound in air is the propagation of pressure waves through the atmosphere, which can be heard by humans and animals.
343 m in 1 s
A little perspective
The speed of sound in air is about 1.14 times 300 metres per second.
Speed: 1,080 km/h; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Speed: 1,235 km/h; approximate.
Approximately 343 m/s in dry air at 20 °C. Mach numbers use this stated local sound speed.
The marked speed is calibrated. Unmeasured illustration details are representative.
Measurement details
Compare 300 metres per second with the speed of sound in air. The notes below explain how each value was chosen.
Speed · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Speed · approximate
Approximately 343 m/s in dry air at 20 °C. Mach numbers use this stated local sound speed.
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
Speed is distance per unit time; it does not specify the total distance travelled.
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