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Gravitational force is directly proportional to the product of the two:
AMirrors
BMotions
CMinutes
DMasses
Answer & Solution
Correct answer: D. Masses
1. Two quantities enter the gravitational law: how much matter, and how far apart.
2. Doubling either mass doubles the force.
3. The force is directly proportional to the product of their masses.
4. So the answer is the masses.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 6 'Uniform Circular Motion and Gravitation', sections 6.1-6.6_
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