Here's why:

* Mass: This is the amount of matter in an object.

* Acceleration due to gravity: This is the acceleration experienced by an object due to the gravitational pull of the Earth (or another celestial body). On Earth, this acceleration is approximately 9.8 m/s².

* Force: Force is what causes a change in an object's motion. It's measured in Newtons (N).

The formula:

Force (F) = Mass (m) * Acceleration due to gravity (g)

Example:

Let's say you have an object with a mass of 10 kg. The force of gravity acting on it would be:

F = 10 kg * 9.8 m/s² = 98 N

This means the object experiences a force of 98 Newtons due to gravity.