Observations show that all freely falling objects near the Earth accelerate at $g=$

$\text{ m/s}^2$. Substituting this into Newton's Second Law gives the gravitational force as $|\vec{F}_g|=$

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We call this gravitational force near the surface of the Earth Select...A.massB.densityC.heavinessD.weightSelect..., which is measured in Select...A.newtons ($N$)B.kilograms ($kg$)Select....