Homework Help: physics

Posted by Anonymous on Thursday, March 8, 2012 at 12:23pm.

An 82.0 kg skydiver jumps out of a balloon at an altitude of 1 500 m and opens the parachute at an altitude of 195 m.
(a) Assuming that the total retarding force on the diver is constant at 55.0 N with the parachute closed and constant at 3 600 N with the parachute open, what is the speed of the diver when he lands on the ground?
(B) At what height should the parachute be opened so that the final speed of the skydiver when he hits the ground is 5.00 m/s?

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