

Well the DJI FPV weighs 795 grams and has a top speed if 87 MPH. That means its impact energy could be as much as 443 ft/lbs upon impact. For reference, a 9mm gun firing a 115 grain (not gram) projectile at 1180 fps generates about 356 ft/lbs of energy and that’s just at the muzzle. Bullets are traveling slower the farther they travel where as a drone could be accelerating upon impact.
Yes, drones can be very dangerous.
Drones definitely can accelerate rapidly if designed to operate that way. See below.
this video