* Free Fall: An object in free fall is only acted upon by gravity. This means it accelerates downwards at a constant rate (approximately 9.8 m/s²).
* Air Resistance: As an object falls through the air, it encounters resistance from the air molecules. This resistance increases with the object's speed.
* Terminal Velocity: As the falling object accelerates, air resistance also increases. At some point, the air resistance force becomes equal in magnitude to the force of gravity (the object's weight). At this point, the net force on the object is zero, and it stops accelerating. The object continues to fall at a constant speed, which is called terminal velocity.
In summary:
* When air resistance equals weight, the net force on the object is zero.
* This means the object stops accelerating.
* The object falls at a constant speed, which is its terminal velocity.
