# Air Resistance

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Air resistance is a force that affects an object that moves through the air.

## Air Resistance formula

$$F_a = -kv^2$$

Where:

$$F_a$$ = force of air resistance or drag

$$k$$ = constant depends upon the shape of the object being dropped and the density of the atmosphere

$$v$$ = velocity of the moving object

Tags: Equations for Air