* Only gravity acts on it: The most crucial aspect of free fall is that the only force acting on the object is gravity. This means no air resistance, no thrust, no other forces interfering with its motion.

* Constant acceleration: In free fall, objects experience a constant acceleration due to gravity. This acceleration is denoted as 'g', and on Earth, it's approximately 9.8 m/s². This means the object's velocity increases by 9.8 meters per second every second it falls.

* Neglecting air resistance: While technically true free fall only occurs in a vacuum where there's no air, in practical terms, we often talk about free fall assuming negligible air resistance. This is a valid assumption for objects falling short distances or in situations where air resistance is minimal.

* Independent of mass: In a true vacuum (no air resistance), all objects in free fall accelerate at the same rate, regardless of their mass. This is one of Galileo's famous discoveries, and it's why a feather and a hammer will fall at the same rate on the moon.

* Path is a parabola (in most cases): Assuming the object starts with some initial horizontal velocity (like being thrown off a cliff), its path through the air will be a parabola. This is because its horizontal motion is constant, while its vertical motion is affected by gravity.

Important Note: In real-world scenarios, air resistance plays a significant role. This force opposes the object's motion, and its impact depends on factors like the object's shape, size, and velocity. Air resistance can cause objects to reach a terminal velocity, where the force of air resistance balances the force of gravity, and the object stops accelerating.