Larger objects fall faster.
Smaller objects fall slower.
Because
We all move in a medium.
Nothing falls in isolation.
But if smaller objects fall slower, what happens if an object is small enough? If really small then it won't fall, not at all..?
Yes, actually. But that doesn't mean it will remain motionless, hovering in midair forever. Au contraire, motion will be a totally random, unpredictable journey.
If the object ever hits ground, it might as well be on Mars, not Earth. Or collide with any universal object, eventually...
But if 2 different objects are dropped, in a perfect vacuum, they'll fall equally fast, won't they..?
However, a perfect vacuum cannot exist. Pure nothing is only an idea, never physical reality.
Even if a vacuum somehow did exist, we'd be unable to detect it.
You can't even touch it, without turning "nothing" into "something". Even looking would pollute it...
Density, not weight, affects all falls.
(density is volume per surface area).
Imagine a simple object, like a cube, each side equal distance: S.
Volume is then S x S x S = S3.
Total Area is 6 times S x S = 6 x S2.
What will happen, if we increase size of cube? The ratio between surface and volume also changes:
volume grows much faster then surface area (=power of 3 versus power of only 2).
Less surface means less friction, less resistance to motion means faster fall.
If you drop two feathers, one natural and one made of lead, they will fall differently. The cause? Not different weight, but density differs.
If you drop 2 other feathers, same material and shape, but different sizes.
You'll see the larger feathers falls faster, following the most vertical path.
All the small feathers just gets blown up and away, never grounded but going with the wind...
Just like dust never rests, and mountains never move...