Definition: The term "cgs" stands for the International System of Units, which is a set of units used by the scientific community in physics and astronomy. The definition of cgs is as follows: 1. Centripetal Acceleration - This is the acceleration experienced while moving a body towards a circular path. 2. Gravitational Constant - It’s the physical constant that describes gravity. 3. Centripetal Force - This force is perpendicular to both velocity vectors and centripetal direction, and it's always directed towards a point in motion. 4. Mass of the Object - The mass of an object affects its acceleration but not its gravitational field strength. 5. Radius of Gyration - It represents how well an object’s shape can be bent under gravity. 6. Angular Acceleration - This is the tangential velocity of the center of rotation in a circular motion. The cgs unit system is widely used in astrophysics, especially in celestial mechanics and orbital mechanics to describe various phenomena such as planets, moons orbiting stars, and satellites around other planets.