Parachutists call it ground rush. Apparently while you’re falling through the sky and before you open your parachute the perception is that you’re dropping towards the ground at a perfectly manageable speed. Yes it’s exhilarating, but there’s plenty of time to look around you and take in the wonder of it all.
But that’s an illusion caused by the lack of visual cues. It’s only when you drop below a certain height and suddenly become aware that the ground is rushing up to meet you that you realise how fast you’ve been falling all along.