the person who walked under it and got it on its head.

I think since the glass is heavier it would hit first. That would be a nice experiment.

If you ignore air resistance, they should both theoretically fall at the same rate. If the water is inside the glass, the glass should hit the ground first.

If you ignore air resistance, they should both theoretically fall at the same rate. If the water is inside the glass, the glass should hit the ground first.

the glass because it has more gravitational pull on it. the water would levitate for a couple seconds because the cup would be dropping so fast. i feel like a nerd...no offense btw..why would you drop water off the sears tower?

How about a right answer? elleonora "the guy whose head it hits" - nice answer, but that wasn't one of your two options. lilemoblondegirl "the glass has more gravitational force on it"- er, probably not. My glasses all weigh less than the water they contain. bandgeek6516 "if you ignore air resistance" - so the Sear's Tower's on the Moon now? justme30 - "since the glass is heavier it would hit first" - half right, but a bit misleading, since the water probably weighs more. The answer is that the glass hits first. In a drop from the height of the Sears Tower that glass is going to tumble (lol, perhaps it's a tumbler), and the water is going to come out. Capilliary action draws the water into droplets. Air resistance is much more effective on smaller objects than larger ones. The air resistance only goes up approximately proportionally with the diameter of an object, whereas the gravitational force goes up proportionally with the mass of the object which goes up proportionally with the diameter times the diameter times the diameter! That glass is hitting first, shattering into a thousand pieces, which go scattering, come to rest, think sadly upon their loss of unity and then, and only then, if the wind allows it, do they get a shower.