- #1

kraigandrews

- 108

- 0

## Homework Statement

A particle falls in Earth's gravity. The force of air resistance is F = −αv

**v**where

**v**is the velocity, v is the speed, and α is a constant. (The direction of the force is opposite to the velocity, and the magnitude of the force is αv2.) If the terminal speed is 20.2 m/s and the mass is 2.6 kg, determine the constant α.

## Homework Equations

F=ma=mdv/dt

## The Attempt at a Solution

I was hoping somebody could point me in the right direction. I know how to solve a problem with just a resistive force, however, I am not sure where to start when given both the speed and velocity vector in the retarding force. So just any guidance as to where to start would be greatly appreciated.

Thanks.