Here's why:
* Newton's Law of Universal Gravitation: This law states that every object in the universe attracts every other object with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them.
* Acceleration due to Gravity: Near the surface of the Earth, the acceleration due to gravity is approximately 9.8 m/s². This means that every second, the velocity of a falling object increases by 9.8 meters per second.
* Force = Mass x Acceleration: Newton's second law of motion states that the force acting on an object is equal to its mass multiplied by its acceleration.
Therefore:
* Force = 1 kg * 9.8 m/s² = 9.8 Newtons
Note: This is an approximation. The actual force of gravity varies slightly depending on location (altitude, latitude) and the density of the Earth below the object.
