Which statement about terminal velocity is true?

Which statement about terminal velocity is true?

• A. It only applies to solid objects
• B. It is attained when drag force equals gravitational force
• C. It is reached instantly upon release
• D. It varies with the object's color

Answer: (B)

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration. The key aspect of this concept is that terminal velocity is achieved when the upward drag force acting on the object equals the downward gravitational force. At this point, the net force acting on the object becomes zero, resulting in no further acceleration, and the object falls at a constant speed. This understanding is crucial as it reflects the balance of forces that occurs during free fall, rather than emphasizing characteristics like solid structure, speed of attainment, or even the color of the object. While terminal velocity can apply to various objects (not just solid ones), its fundamental definition relies on the relationship between gravitational forces and drag forces, which is accurately captured in the correct statement.

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration. The key aspect of this concept is that terminal velocity is achieved when the upward drag force acting on the object equals the downward gravitational force. At this point, the net force acting on the object becomes zero, resulting in no further acceleration, and the object falls at a constant speed.

This understanding is crucial as it reflects the balance of forces that occurs during free fall, rather than emphasizing characteristics like solid structure, speed of attainment, or even the color of the object. While terminal velocity can apply to various objects (not just solid ones), its fundamental definition relies on the relationship between gravitational forces and drag forces, which is accurately captured in the correct statement.