Final answer:
Ignoring air resistance, the velocity of a falling object is constantly increasing, as it experiences constant acceleration due to gravity, which averages 9.81 m/s² on Earth.
Step-by-step explanation:
The question posed pertains to the behavior of a falling object when ignoring air resistance. In physics, particularly when discussing free fall, the correct answer is that the velocity of an object is constantly increasing if air resistance is ignored. This is because the object is experiencing constant acceleration due to gravity, which on Earth averages 9.81 m/s². Objects in free fall under the influence of gravity alone (with negligible air resistance) will therefore continue to accelerate and gain velocity at this constant rate, resulting in increasing velocity over time.
On the other hand, if we consider air resistance, this force acts in the direction opposite to the motion of the object. As an object's speed increases during free fall, air resistance increases as well, eventually balancing the gravitational force, at which point the object reaches terminal velocity and falls at a constant speed.