Lecture 4 Notes (PDF) - SFSU Physics & Astronomy

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Fun QuickLab: : Reaction time d = 1 2 2 g t 2 t = , g = 9.8m 2d g s 23 2-D Motion - Vectors Scalar: number with units Vector: quantity with magnitude and direction How to get to the Library: you need to know how far and which way to go. In 2-D, need more than + & - directions. 24
Vector Notation • When handwritten, use an arrow: A r • When printed, may be in bold print: A • When dealing with just the magnitude of a vector in print, an italic letter may be used: A • Position vector usually written as r • Displacement vector ∆r 25 The Components of a Vector You may accomplish the displacement ∆r by making a displacement ∆x followed by a displacement ∆y. ∆y ∆r ∆x is called the “x scalar component” of ∆r ; ∆y the “y scalar component” ∆x 26
Page 1 and 2: Physics 111.01 Lecture 4 (Walker: 2
Page 3 and 4: Solving the problem • What is kno
Page 5 and 6: Free Fall • Objects moving under
Page 7 and 8: v = - y = y = - v = - y = - Free fa
Page 9 and 10: Graphical example: A ball is thrown
Page 11: Example: The Flying Cap Upon gradua
Page 15: More About Components of a Vector

Lecture 4 Notes (PDF) - SFSU Physics & Astronomy

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