Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ===== Vectors & Scalars ===== ==== Pre-lecture Video ==== ** This takes DC about 9 minutes to deliver. ** - Start with verbal definitions - Define scalar (physical quantity represented by just a number) - Give examples (mass, volume, and density) - Define vector (physical quantity represented by number and direction - size and orientation) - Give examples (velocity (traveling along Grand River to the east at 40 mph), accel, forces) - Picture of a vector - Similarity of two vectors - Mathematical representation in 3D - Components of the vector (how much of the vector is in each direction) - Shift to 2D vector (easier to draw) - Graphical representation (draw big) - Vector components can be measured from reference point (origin or elsewhere) - Mathematical representation - Magnitude can be computed (Pythag) - Orientation can be computed (trig, defined from +x; so be careful) - Can also get components from mag and orientation (trig, defined from +x, so again be careful) - Finally, adding and subtracting vectors - Graphically, tip to tail method (show addition) - Mathematically, add or subtract scalar components (show addition) - Some additional notes are online including unit vectors and vector subtraction ==== Possible Conceptual Homework ==== * From {{:course_planning:course_notes:phy183_lecture_week2_f2013.pdf|PHY183_Lecture_Week2_F2013}}: * 1-2, 1-3, 1-4, 1-5 ==== Pre-Lecture - Scalars and Vectors ==== {{youtube>a0Km-66BGDo?large}} course_planning/pre_lecture/vectors.txt Last modified: 2014/06/22 07:23by pwirving