1.) Physical Quantities and their units
We start with the basic quantities (distance, time, etc.). The units are from the S.I. system (modern metric system), but since we will also use English units we must use conversion factors -- how to convert between them (e.g. -- how many kilometers are there in 100 miles?)
2.) Motion
The basic physical laws describe how objects move in time. We then construct “compound” quantities (built up from the basic ones) like velocity and acceleration, which describe motion. We use these concepts to start learning the Laws of Motion. We start with Galileo’s Laws for falling bodies, and the formulas he developed from them (“constant acceleration formulas”).
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