* Gravity is a constant force: Near the surface of the Earth, the gravitational force acting on an object is nearly constant. This means the force pulling the object downwards is always the same.
* Newton's Second Law: Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
* Force = Mass x Acceleration
* Constant Force, Constant Acceleration: Since the force of gravity is constant, and the mass of the object remains the same, the acceleration due to gravity is also constant.
Important Points:
* Air Resistance: In reality, air resistance plays a role in free fall. As an object falls, it encounters air resistance, which acts as an opposing force. This opposing force increases with the object's speed, eventually reaching a point where it balances the force of gravity. At this point, the object reaches its terminal velocity, and its acceleration becomes zero.
* Near Earth's Surface: The acceleration due to gravity is considered constant only near the Earth's surface. As you move further away from the Earth, the force of gravity decreases, and so does the acceleration due to gravity.
The acceleration due to gravity (g) on Earth is approximately 9.8 m/s², meaning that for every second an object is in free fall, its velocity increases by 9.8 meters per second.
