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## Homework Statement

An 80.0kg skydiver jumps out of balloon at an altitude of 1000m and opens the parachute at an altitude of 200m. a) Assume that the total retarding force on the diver is constant at 50.0N with the parachute closed and constant at 3600N with the parachute open, what is the speed of the diver when he lands on the ground?

## Homework Equations

Work Done equation

Kinetic Energy equation

Potential energy equation

## The Attempt at a Solution

i have tried to solve this question but my answers does not seem correct and logically not possible. So i need some help on how to start this question.

P.S