The Conservation of Momentum

The way a whip works is you have a thick handle, and it tapers down to a smaller diameter. Because of conservation of momentum, in order for the mass times velocity to be equal, because mass is smaller, velocity has to go up. So that mass and velocity is then effectively, it's just tightened yem energy just focused. And because of that, you you get this sonic event, because it actually goes beyond the speed of sound.