The carriage drivers whipcrack (we’ll get to this term soon) the whip. And as a kid, I always thought that the whip must be hitting the poor animal or perhaps must be hitting itself & that might be the reason why we are able to hear the loud sound! But aa-aa, that’s not the reason and also there isn’t a small sound speaker to produce sound (humor me & ignore it 😛 ). Everyone must have observed this… but ever thought about it that how & why does a whip make a cracking sound ?