The acceleration of gravity, denoted as "g", is a physical constant that represents the acceleration an object experiences when falling towards a gravitational source, such as the Earth.
The acceleration of gravity can be calculated using the formula g = G * M / r^2, where G is the gravitational constant, M is the mass of the gravitational source, and r is the distance between the object and the source.
The value of acceleration of gravity on Earth is approximately 9.8 m/s^2, which means that an object in free fall will accelerate at a rate of 9.8 meters per second squared towards the Earth's surface.
Yes, the acceleration of gravity varies on different planets depending on their mass and radius. For example, on the surface of the Moon, the acceleration of gravity is approximately 1.6 m/s^2, while on Jupiter it is approximately 24.8 m/s^2.
As altitude increases, the acceleration of gravity decreases. This is because as an object moves away from the Earth's surface, the distance between the object and the Earth's center increases, resulting in a decrease in the gravitational force and therefore a decrease in acceleration of gravity.