Acceleration due to gravity refers to the acceleration that an object experiences when it is pulled towards a massive body, such as Earth, due to the force of gravity. On Earth, this acceleration is symbolized by ggg and has a standard value of approximately 9.8 meters per second squared (m/s²). This means that the velocity of a freely falling object increases by about 9.8 m/s every second during its fall, regardless of the object's mass. The acceleration due to gravity is a vector, having both magnitude and direction, and it points towards the center of the Earth or the attracting body.