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Doubling the mass while holding the net force fixed changes the acceleration to:
ATwice its value
BFour times as large
CExactly the same
DHalf its value
Answer & Solution
Correct answer: D. Half its value
1. The mass dependence runs the other way from the force dependence.
2. Acceleration is exactly inversely proportional to mass.
3. Inverse proportionality means one rises as the other falls.
4. Here the mass is doubled while the net force is unchanged.
5. So the acceleration falls to half its value.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 4 'Dynamics: Force and Newton's Laws of Motion', sections 4.1-4.8_
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