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Which of the following statements about energy is true? (sc 6 P11.1)

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.

(1 point)
Responses

I and IV only
I and IV only

II and III only
II and III only

II and IV only
II and IV only

I and III only

1 answer

Let's analyze each statement regarding energy:

I. Kinetic energy cannot be transformed into another type of energy.

  • This statement is false. Kinetic energy can be transformed into other forms of energy, such as potential energy, thermal energy, etc.

II. Kinetic energy can be transformed into potential energy.

  • This statement is true. For example, when an object is lifted against gravity, its kinetic energy can be converted into gravitational potential energy.

III. Potential energy can be transformed into kinetic energy.

  • This statement is also true. An object falling due to gravity converts its potential energy (due to its height) into kinetic energy as it accelerates downwards.

IV. Potential energy cannot be transformed into another type of energy.

  • This statement is false. Potential energy can be transformed into various forms of energy, such as kinetic energy, thermal energy, etc.

Based on this analysis, the true statements are II and III.

Therefore, the correct option is: II and III only.