An object of mass 3 kg is dropped from the roof of a two-storey house and reaches the ground with a speed of 10 m/s. Neglecting friction, calculate:i.the kinetic energy of the object when it reaches the ground.ii.the potential energy of the object when it is on the roof.iii.the height of the roof.iv.the total mechanical energy of the object when it is 1 m above the ground.

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Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 5OQ: Answer yes or no to each of the following questions. (a) Can an objectEarth system have kinetic...

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An object of mass 3 kg is dropped from the roof of a two-storey house and reaches the ground with a speed of 10 m/s. Neglecting friction, calculate:
i.	the kinetic energy of the object when it reaches the ground.
ii.	the potential energy of the object when it is on the roof.
iii.	the height of the roof.
iv.	the total mechanical energy of the object when it is 1 m above the ground.

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