Question

as two masses separate from each other (i.e. get further apart), the force of gravity a gets weaker. b stays the same. c gets stronger. d you must know the amount of mass first.

Explanation:

According to Newton's law of universal gravitation \(F = G\frac{m_1m_2}{r^{2}}\), where \(F\) is the gravitational force, \(G\) is the gravitational constant, \(m_1\) and \(m_2\) are the masses, and \(r\) is the distance between the centers of the two masses. When the two masses separate (\(r\) increases), and \(m_1\), \(m_2\) and \(G\) remain constant, since \(F\) is inversely proportional to \(r^{2}\), the gravitational force \(F\) will decrease.

Answer:

A. gets weaker.