Here's a breakdown:
* Free fall: This means the object is only under the influence of gravity. No other forces, like air resistance or propulsion, are acting on it.
* Gravity: This is the force of attraction between any two objects with mass. The Earth has a large mass, so it exerts a strong gravitational pull on objects near it.
* Acceleration due to gravity: The force of gravity causes objects to accelerate towards the Earth at a constant rate of approximately 9.8 m/s². This means that an object's downward velocity increases by 9.8 meters per second for every second it falls.
Important notes:
* Air resistance: In reality, air resistance will affect the motion of falling objects. This force opposes the motion and can significantly slow down the object.
* Terminal velocity: As an object falls, the force of air resistance increases. Eventually, the force of air resistance will equal the force of gravity, and the object will stop accelerating and fall at a constant speed called terminal velocity.
* Near Earth's surface: Free fall is a simplified model that works well for objects near the Earth's surface. As an object gets further away from Earth, the force of gravity decreases, and its acceleration will be less than 9.8 m/s².
