science question need help

Well, as temperature rises, it makes the water molecules get farther apart.

As a result, you have less molecules to oppose the passing of the ball.

So, it falls faster at higher temperatures.

Take a look here, it gives you some clues :

Viscosity

Stokes Law is a special solution of the Navier-Stokes Equation.. Stokes Law relates the settling forces of a spherical particle in a fluid and the terminal settling velocity can be used to measure fluid viscosity.

Stokes law does have a term in both the denominator and the numerator that changes with temperature. The numerator term id the delta rho--the difference in density of the sphere and the fluid, and in the denominator--viscosity. Your problem is then answered by determined by finding out which of these two terms changes more with increasing temperature----

Rap

Consider: What form does water have at 20 F?

oooh, good for Huff--trick question.

Is my forehead sloped, or what?

Rap

Your forehead is irrelevant. What's relevant is that we've lost 5 satellites, both civilian and military, and even a space probe about to land on Mars, because software was written in both metric and imperial units.

Mind you the Russians, the Chinese, and the European Space Agency have also lost satellites because part of the code was in 16-bit or 32-bit code incompatible with 64-bit processors but they at least consistently use the metric system.

That question shouldn't have appeared in a science class to begin with.

Can't water exist as a liquid at 20 degrees fahrenheit under the right atmospheric conditions?

Yes it can. In fact, under a pressure of 1,975 atmospheres (an incredible 29,000 lbs per square inch) it will remain liquid down to about -6 degrees F. (-21 degress C.)--the lowest temperature at which it can remain liquid. After that any increase in pressure will start to change the liquid to a solid. At a pressure of about 9,870 atmospheres (about 145,000 pounds per square inch) water will remain in a solid state up to about 170 degrees F. And crazy as it may seem, greater pressures (around 17,000 atmospheres) will turn water solid even at 1,500 degrees F. However, at these pressures, once the temperature reaches around 2,000+ degrees F it will again change to liquid.

I thought so. I'd seen a crazy diagram in Nature magazine about what form of matter water is at certain temperatures.

It's not crazy at all, Huff, for anyone familiar with plasma physics and/or nuclear weapons design (mathematically speaking, not from the standpoint of metallurgical engineering).

However the original question here was one to which the answer would have been EVIDENT if it had only been posted in Centigrade.

More (fortunately minor this time) metric-to-imperial conversion disasters from the latest Mars mission, like the Phoenix missing an entire day of analyzing water (?) composition on that planet because the software kept blinking ....