Transcription of free physics notes for basic physics - Fearofphysics
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free physics notes for basic physics - Fearofphysics
free physics notes for basic physics1 Preliminaries: Things you have to knowHere are some preliminaries for this course. These are things that should be automatic to don t really have anything to do with physics , and aren t necessarily something you ll learnin physics , but should already know from your preparation to be entering this technical what a right triangle is and how sin, cos, and tan work with thatright triangle. Know how the pythagorean theorem works with a right that sin 0 = 0 , cos 0 = 1, sin 90 = 1 and cos 90 = the difference between a radian and degree and how to interconvertbetween a functiony(x), know how to finddy/dxandd2y/dx2. As an alternativenotation, giveny(x), know how to findy (x) andy (x).Vectors or physics we often draw arrows on objects to indicate that something ishappening to it. The arrow is also called a vector and it ll be labeled with some quantity,likeFfor force orvfor velocity, etc.
The velocity-vector: The theme of this entire class Look at this gure, an object with a velocity vector pointing from it. There is a twofold theme
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