Here's why:
* Acceleration: Acceleration is the rate of change of velocity. An object is accelerating when its velocity is changing.
* Terminal Velocity: When an object falls through a fluid (like air), it experiences drag forces that oppose its motion. As the object's speed increases, the drag force also increases. At some point, the drag force will become equal and opposite to the force of gravity acting on the object. This is the point of terminal velocity.
* No More Acceleration: At terminal velocity, the net force acting on the object is zero (gravity and drag forces balance). Since there is no net force, there is no acceleration, and the object's velocity remains constant.
Example: A skydiver reaches terminal velocity after falling for a certain time. Their speed no longer increases, even though they are still falling.
