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Forces are described as falling into which two classes?
AStrong or weak forces
BVertical or horizontal ones
CConstant or variable ones
DConservative or nonconservative
Answer & Solution
Correct answer: D. Conservative or nonconservative
1. The energy behaviour of a force decides its class.
2. Some forces store energy that can be recovered and some do not.
3. Forces are either conservative or nonconservative.
4. Friction is the standard nonconservative example.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 7 'Work, Energy, and Energy Resources', sections 7.1-7.9_
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