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## Homework Statement

I just had an exam in physics and there was this one easy question that I just couldn't wrap my head around.

A skydiver (85kg) is accelerating at 3m/s^2. What is the force of the air resistance on him?

## Homework Equations

f=ma and other mechanics

## The Attempt at a Solution

I solved for the F of the skydiver which would equal 255 N. I then used Newton's third law to conclude that the air resistance must be 255 N up. But then I started thinking... If he's accelerating, there must be a Fnet... How, then, can he accelerate if the friction from the air equals the force of gravity?

What should I have done?