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Conservation of mechanical energy is the form the work-energy theorem takes when the forces involved are:
AOnly perpendicular
BOnly very large
COnly conservative
DOnly frictional
Answer & Solution
Correct answer: C. Only conservative
1. Mechanical energy is conserved only under a particular condition.
2. Forces are either conservative or nonconservative.
3. The work-energy theorem takes a special form in one case.
4. That case is when only conservative forces are involved.
5. The result is the conservation of mechanical energy.
_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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