air resistance | pwn physics 365 | 30 March 2016

May 1, 2016

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On this day in physics: 30 March 1922- Happy Birthday to Arthur Strong Wightman who would have turned 94 today. "[He] was an American mathematical physicist. He was one of the founders of the axiomatic approach to quantum field theory, and originated the set of Wightman axioms." 

Word of the Day- Air resistance is a force which acts opposite an object traveling through air, or any gas. The particles in the gas collide with the object, and even though the molecules are microscopic, many small parcels can create a serious amount of force. It is what cars must oppose to maintain speeds on highways, and why cars are designed to look like they do, they are optimized to minimize air resistance, or drag. It's what pushes sails on sailboats and what can even create enough friction to cause extreme heat and damage upon reentry of satellites, space shuttles, and maybe even....UFOs!

Question of the Day- Do heavier objects fall more slowly than lighter objects? Answer: In the presence of no air resistance, objects fall at the exact same rate, and what changes their fall in the presence of air is AIR RESISTANCE. Check out the video to see a feather and coin fall at the exact same rate in a vacuum.

Keywords: Air, Resistance, Force, Space Shuttle, Drag

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