Can someone please help me with the breaking formula? The whole covid thing has totally fucked my studies and I have a hard time understanding shit without a teacher. im probably fucking retarded so feel free to point that out.

say im going 95 feet per second and stopping on a 5% grade with a coefficient of .85.

So i square 95 and get 9025 on top

Then multiply 2 x 5%? 10% right?

and what do I do with the coefficient and gravity? is it .85 + 32.2? i dont fucking know man, im confused, but the answer I got was like 2000 feet so obviously Im doing something wrong