Here's why:

* Force: Force is a measure of how much an object is being pushed or pulled.

* Newton: The Newton is the standard unit of force in the International System of Units (SI).

The force of gravity depends on the mass of the objects involved and the distance between them. The formula for gravitational force is:

F = G * (m1 * m2) / r²

Where:

* F is the force of gravity

* G is the gravitational constant (approximately 6.674 x 10^-11 N m²/kg²)

* m1 and m2 are the masses of the two objects

* r is the distance between the centers of the two objects