Bluebulb Projects presents:
The Measure of Things Logo
Enter a measurement to see comparisons

1,380 kilometers per hour is about one-and-one-tenth times as fast as The Speed of Sound
In other words, it's 1.120 times the speed of The Speed of Sound, and the speed of The Speed of Sound is 0.8930 times that amount.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 343 m/s. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 5,390 kilometers per hour to 5,620 kilometers per hour in water, depending on its salinity.
There's more!
Click here to see how other things compare to 1,380 kilometers per hour...