Is 1,380 kilometers per hour as fast as The Speed of Sound?
It's about one-and-one-tenth times as fast as The Speed of Sound
The speed of The Speed of Sound is about 1,230 kilometers per hour.
(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! See other comparisons to 1,380 kilometers per hour...