What is terminal velocity?

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. This occurs when the force of gravity pulling the object downward is equal to the force of air resistance pushing against it. At terminal velocity, the object will continue to fall at a constant speed without accelerating further.

Terminal velocity is the maximum constant velocity attained by a freely falling object in a fluid. It is reached when the resistance of the fluid becomes equal to the weight of the object, causing its acceleration to become zero. Terminal velocity is determined by the object's shape, size, and density, as well as the density and viscosity of the fluid through which it is falling.