12 A paratrooper is initially falling downward at a speed of 30.0 m/s before her parachute opens. When it opens, she experiences an upward instantaneous ac- celeration of 75.0 m/s?. (a) If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 5.00 m/s? (Actually the accelera- tion is not constant in this case, but the equations of constant acceleration provide an easy estimate.) (b) How far does the paratrooper fall during this time interval?

12 A paratrooper is initially falling downward at a speed of 30.0 m/s before her parachute opens. When it opens, she experiences an upward instantaneous ac- celeration of 75.0 m/s?. (a) If this acceleration remained constant, how much time would be required to reduce the paratrooper's speed to a safe 5.00 m/s? (Actually the accelera- tion is not constant in this case, but the equations of constant acceleration provide an easy estimate.) (b) How far does the paratrooper fall during this time interval?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 75AP: A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree....

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