Here's why:
* Gravity: This force pulls the object downwards, causing it to accelerate.
* Drag: This force opposes the motion, increasing as the object's speed increases.
As the object falls, the drag force gradually increases until it becomes equal to the force of gravity. At this point:
* Net force: The net force acting on the object is zero (gravity downwards = drag upwards).
* Acceleration: The object no longer accelerates, as the forces are balanced.
* Constant speed: The object continues to fall at a constant speed, which is called terminal velocity.
Terminal velocity depends on factors such as the object's shape, mass, and the density of the air.
