If you live in the New York City, you are moving faster than the speed of sound, even when you are sleeping.
The speed of sound is about 340 m/s (meters per second). And you are moving at 350 m/s! Isn't that amazing?
Indeed, it's amazing. But it's not surprising. The radius of the earth is about 6371 km (kilometers). The latitude of New York City is 40.7° N. The earth rotates a full circle once every 24 hours. In New York, the full circle is about 30 thousand km. So the speed is 1.26 km per hour, and that is 351 m/s, moving from the west towards the east.
