What is a general observation about objects in free fall based on the experiments described?

The choice indicating that heavier objects fall faster only in the absence of air resistance is grounded in the principles of physics demonstrated by Galileo's experiments. In a vacuum, where there is no air resistance, all objects, regardless of their mass, fall at the same acceleration due to gravity, approximately 9.81 m/s². This means that if you drop a feather and a hammer in a vacuum, they will hit the ground at the same time.

In the presence of air resistance, lighter objects are affected more significantly than heavier ones. For instance, a feather experiences more drag relative to its weight than a hammer does. Thus, while in an environment where air is present, heavier objects may appear to fall faster because they are less influenced by air resistance compared to lighter objects. This illustrates the fundamental distinction between free fall in a vacuum versus in an atmosphere, aligning with the principle that mass affects the acceleration in terms of air resistance, but not the free fall acceleration in a vacuum.

In contrast, other statements do not accurately reflect the physics of free-fall. The idea that lighter objects always fall faster is incorrect because, without air, all objects fall at the same rate. The statement that all objects fall at the same speed overlooks the role of air