Acceleration due to gravity is the acceleration experienced by an object due to the gravitational force exerted by the Earth (or another celestial body). It is denoted by the symbol 'g'.

Here's a breakdown:

* Acceleration: A change in velocity over time.

* Gravity: The force of attraction between any two objects with mass.

* Acceleration due to gravity (g): The rate at which an object accelerates towards the Earth due to gravity.

Key points about acceleration due to gravity:

* Constant value: On the surface of the Earth, 'g' is approximately 9.8 m/s² (meters per second squared). This means that for every second an object falls, its velocity increases by 9.8 meters per second.

* Not uniform: The value of 'g' varies slightly depending on factors like altitude and latitude.

* Free fall: When an object falls without any other forces acting on it except gravity, it experiences acceleration due to gravity.

* Independent of mass: The acceleration due to gravity is independent of the mass of the falling object. This means a feather and a bowling ball will fall at the same rate in a vacuum (where air resistance is negligible).

In essence, acceleration due to gravity is the rate at which objects fall freely towards the Earth due to its gravitational pull.