
Unusual Properties Of Water The lower the air pressure, the less dense the air and the less the number of molecules in a unit of air. Thus, a baseball or any moving object experiences less resistance or drag to its motion and ends up travelling a longer distance in air of less density.The baseball goes further as the reduced molecules in the air reduce the rate at which its speed slows.This same effect is seen, but somewhat less obviously when the amount of water vapor increases in the air. Baseballs travel further in moist air where increase in the amount of water vapor reduces the number of molecules subjecting the baseball to resistance.
Dry dense air also slows a race car. But as high speed is a mandatory requirement, race cars are designed to take advantage of the drag produced by different weather conditions.Simply speaking, the Indy 500 cars are designed to accept the drag to better hug the track i.e. make the drag push the car onto the track. While driving skills are of paramount importance, it is these design modifications that allow a race car to take a turn at 115 mph without sliding off the track instead of a slow 70 mph to win the Indianapolis

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