7. An acorn falls from a tree. What happens to the kinetic energy and potentialenergy? *a. KE increases, while PE decreasesb. KE decreases, while PE increasesc. KE decreases, while PE decreasesd. KE increases, while PE increasesSign out• O 10:11DIIt

Name: 7. An acorn falls from a tree. What happens to the kinetic energy and
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Description: 7. An acorn falls from a tree. What happens to the kinetic energy and potentialenergy? *a. KE increases, while PE decreasesb. KE decreases, while PE increasesc. KE decreases, while PE decreasesd. KE increases, while PE increasesSign out• O 10:11DIIt

Answered: 7. An acorn falls from a tree. What…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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7. An acorn falls from a tree. What happens to the kinetic energy and potential
energy? *
a. KE increases, while PE decreases
b. KE decreases, while PE increases
c. KE decreases, while PE decreases
d. KE increases, while PE increases
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• O 10:11
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Expert Solution

Step 1

As the acorn falls down from tree, its PE will decrease (PE=mgh , where h is height above ground). All the lost PE will be converted to KE because of the conservation of energy principle. Therefore, KE will increase as the acorn go towards the ground.

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