Every object attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

The gravitational constant (G) is a fundamental constant of nature with a value of approximately $6.67 imes 10^{-11} frac{N cdot m^2}{kg^2}$.

A gravitational field is a field created by a massive object that exerts a force on other objects with mass.

A conservative force is a force where the work done is path-independent, and the total work on a closed path is zero. Gravity is a conservative force.

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

Increasing the distance between two objects decreases the gravitational force between them, following an inverse square relationship.

Increasing the mass of one object increases the gravitational force between it and another object proportionally.

The object accelerates until air resistance equals gravitational force, resulting in terminal velocity.

Near Earth's Surface: $g = G frac{M}{R^2}$ (R is Earth's radius, g is approximately constant) | Far from Earth's Surface: $g = G frac{M}{r^2}$ (r is distance from Earth's center, g varies with distance)