Add inertia to click+drag camera movement

I’m trying to figure out how best to implement a fade out of velocity from my pawn that rotates based on mouse click+drag. Essentially if I flick left, it rotates the camera left, but continues rotating and slows down over time, ideally based on how hard I flicked. Is there some kind of lerp, or timeline I should be looking into? Any solid video tutorials on this? I can’t find anything on the internet about this specifically. Thanks.