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energy considerations and assuming negligible air

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 27PE Chapter 7

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 27PE

energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 20.0 m above water with an initial speed of 15.0 m/s strikes the water with a speed of 24.8 m/s independent of the direction thrown.

Step-by-Step Solution:

Step-by-step solution Step 1 of 1 The potential energy loss by the rock is The gain in the kinetic energy of the rock is According to the work energy theorem Or Therefore, Or Substitute for , for , and for in the above equation. Hence, the speed of the rock when it strikes the water is .

Step 2 of 1

Chapter 7, Problem 27PE is Solved
Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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energy considerations and assuming negligible air