Problem: Imagine a book that is falling from a shelf. At a particular moment during its fall, the book has a kinetic energy of 29 J and a potential energy with respect to the floor of 46 J.How do the book’s kinetic energy and its potential energy change as it continues to fall?a. As the book falls, potential and kinetic energy increase.b. As the book falls, potential energy increases and kinetic energy decreases.c. As the book falls, potential energy decreases and kinetic energy increases.d. As the book falls, potential and kinetic energy decrease.

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falling book: PE converted to KE


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Problem Details

Imagine a book that is falling from a shelf. At a particular moment during its fall, the book has a kinetic energy of 29 J and a potential energy with respect to the floor of 46 J.


How do the book’s kinetic energy and its potential energy change as it continues to fall?

a. As the book falls, potential and kinetic energy increase.

b. As the book falls, potential energy increases and kinetic energy decreases.

c. As the book falls, potential energy decreases and kinetic energy increases.

d. As the book falls, potential and kinetic energy decrease.


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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Kinetic Energy of Gases concept. If you need more Kinetic Energy of Gases practice, you can also practice Kinetic Energy of Gases practice problems.