User blog comment:Xilinoc/Chapter 795 - Queen of the Beasts/@comment-3203286-20150730115549

So by my very rough calculations - Kaido weighs 10 tons, and is 8 metres by 5 metres, and air density higher up isn't a real factor, and his drag coefficient is 1.0 - Kaido hit the ground at about 55 metres per second. That's 123 miles per hour. That's pretty fast.