The value "9.81 m/s²" represents the acceleration due to gravity on Earth. This means that an object falling freely towards the ground will increase its speed by approximately 9.81 meters per second for every second it falls. This acceleration is a key concept in physics and is essential for understanding how objects move under the influence of gravity. This acceleration can vary slightly depending on location, such as altitude and latitude, but 9.81 m/s² is the average value used in calculations. It is often denoted by the symbol g and is crucial for various applications, including engineering, physics experiments, and understanding the motion of celestial bodies.