TIL the sound a whip makes when you crack it is caused by a sonic boom created when the tip of a whip moves faster than the speed of sound. The whip was also the first man made object to break the sound barrier.

https://en.wikipedia.org/wiki/Speed_of_sound
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1g0ye3b/til_the_sound_a_whip_makes_when_you_crack_it_is/