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April 18, 2014

Homework Help: physics

Posted by Peter on Friday, October 21, 2011 at 6:01pm.

A falling skydiver has a mass of 123 kg.

(a) What is the magnitude of the skydiver's acceleration when the upward force of air resistance has a magnitude that is equal to one-fourth of his weight? 7.35 m/s^2

(b) After the parachute opens, the skydiver descends at a constant velocity. What is the force of air resistance (magnitude and direction) that acts on the skydiver?
I do not know how to get this second part however i do know that the direction would be upward.

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