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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The size of the gravitational force between two objects depends on their ____
A
frictional forces
B
inertia
C
masses and distances between them
D
speed and direction
Explanation: 

Detailed explanation-1: -The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.

Detailed explanation-2: -The size of the gravitational force is proportional to the masses of the objects and weakens as the distance between them increases. Both objects exert an equal attractive force on each other: a falling object is attracting the Earth with the same size force as the Earth is attracting it.

Detailed explanation-3: -Hence, the two factors are the masses (m1 and m2) of the objects and the distance (R) between the objects.

Detailed explanation-4: -Hence, if the distance between the bodies is doubled, the gravitational force of attraction becomes one-fourth.

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