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**A Person in "Free Fall" Newton's 2nd Law**

## Homework Statement

An 80kg aviator is in free fall and acquires a velocity of 60 m/s and then opens his parachute.

After falling an additional 30m, his velocity has been reduced to 20 m/s. What is the average acceleration of the aviator while his fall is being checked? What is the average force being exerted by the parachute?

## Homework Equations

Force = Mass * acceleration

Average acceleration = change in velocity/change in time

## The Attempt at a Solution

Any help would be appreciated, Dont understand how to go about problem