In general, the more rigid (or less compressible) the medium, the faster the speed of sound. The channeling of sound waves allows sound to travel thousands of miles. Type in the amount you want to convert and press the Convert button. At sea level and in standard atmospheric conditions, the speed of sound is 345 meters per second (equivalent to 770 mph or 1239 kph). In an ideal gas (see The Kinetic Theory of Gases ), the equation for the speed of sound is v R T K M, 17.6 where is the adiabatic index, R 8.31 J/mol K is the gas constant, T K is the absolute temperature in kelvins, and M is the molar mass. While sound moves at a much faster speed in the water than in air, the distance. Kilometres per hour Speed of sound Precision: decimal digits Convert from Kilometres per hour to Speed of sound. This is because the speed of sound changes with altitude and temperature. The sonic boom occurs as the aircraft reaches the speed of sound, or Mach 1, relative to the surrounding air - not measured in ground speed. However, when the speed increases, the impact on the ground lessens as the 'cone' of the shockwaves tightens. Velocity is vector quantity with direction. Despite its name, it is not a one-off bang, but rather it is continuous, trailing the aircraft. The velocity at which a small disturbance will propagate through the medium is called Acoustic Velocity or Speed of Sound. This loud noise has been a severe limitation for supersonic aircraft, with many countries (including the US) not permitting supersonic flight over land.Ī sonic boom is actually a shock wave that is produced when an object, in this case, an aircraft, travels faster than the speed of sound.

One of the features of supersonic flight is the 'sonic boom' that occurs when the aircraft exceeds the speed of sound. This result is dubious expressing that under the identical temperature conditions at the sea level and at an altitude of 100 km, where air density is 107 times.

Speed of sound in km