Final answer:
The faster object encounters the greater air resistance when two objects of the same size fall through the air, because air resistance increases with speed.
Step-by-step explanation:
If two objects of the same size fall through air at different speeds, the one that encounters the greater air resistance is A) The faster object. Air resistance acts in the direction opposite the motion of the object and increases with the object's speed. Therefore, among objects of the same shape and size, the one that falls faster will have a greater force of air resistance acting on it.
In the real world, factors like air resistance can result in different fall rates for objects of the same size but varying weights, like a tennis ball and a baseball, because air resistance opposes the motion of the object through the air. However, if we look at two objects of the same size and shape, the one with a higher speed through the air will encounter more air resistance due to increased interaction with air molecules. In summary, faster speed leads to greater air resistance.