Which of the following statements about energy is true?
I. Kinetic energy cannot be transformed into another type of energy.
II. Kinetic energy can be transformed into potential energy.
III. Potential energy can be transformed into kinetic energy.
IV. Potential energy cannot be transformed into another type of energy.
Responses:
II and IV only
I and III only
II and III only
I and IV only
II and III only
Explanation: Kinetic energy can be transformed into potential energy (such as when a roller coaster reaches the top of a hill) and potential energy can be transformed into kinetic energy (such as when an object falls from a height). Statements I and IV are incorrect because both kinetic and potential energy can be transformed into other types of energy.