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An object falling without air resistance or friction is defined to be in:
AFree-fall
BFree rotation
CFree rolling
DFree sliding
Answer & Solution
Correct answer: A. Free-fall
1. Idealised falling motion has a specific name.
2. Real falling objects experience air resistance.
3. For the ideal situations considered here, air resistance and friction are neglected.
4. An object falling that way is defined to be in free-fall.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 2 'Kinematics', sections 2.1-2.8_
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