Scientists have developed theories about our natural world since humankind became curiosity about the workings of the environment.  These theories, developed through many observations, are hard to put aside.  Humans hold fast to hard-won beliefs but eventually new facts and new observations refine or kill old theories.  Classical physics began with Newton’s theory of gravity and the math most of us dreaded in high school – calculus.  

What goes up must come down
Spinnin’ wheel, got to go round — David Clayton-Thomas Read

Even though many of Newton’s ideas were found imprecise by scientists such as Einstein, they have served humankind well in developing technology including those invented during the industrial revolution.  Test your knowledge of some basic principles of classical physics.  I’m sure you’ll recognize some of these ideas from your high school science classes!


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