Answers CCSD Chemistry CP IC 25-26 Unit Test — Unit testQuestion 4

4

QuizMultiple Choice

Unit Test — Unit test

Question 4 • CCSD Chemistry CP IC 25-26

A book is falling from the top shelf of a bookcase. Which statement correctly describes the change in the energy of the book?

Answer

A

The potential energy and kinetic energy remain the same.

B

The potential energy decreases as kinetic energy increases.

C

The kinetic energy decreases as potential energy increases.

D

The kinetic energy remains at zero, but potential energy increases.

Explanation

As the book falls, its height decreases, so its gravitational potential energy decreases. Its speed increases, so its kinetic energy increases; therefore, the correct statement is “The potential energy decreases as kinetic energy increases.”

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