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# EP Chap3 - Chap 3 Vectors Note this is an outline of the...

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1 Chap 3 Vectors Note – this is an outline of the lecture, print this and take notes on it in lecture. It is not the complete lecture. You should attend lecture to get the complete notes Images taken from Halliday/Resnick/Walker, Fundamentals of Physics, 7 th Edition, John Wiley and Sons Inc., by permission. Hints P25 . A body diagonal is a line that extends rom one corner to a Diametrically opposite corner. An example is shown as a dashed line for the a dashed line for the body diagonal, part b), that starts at ( a , 0, 0) 28. F or d) construct a unit vector along ( ). Then take dot product with . 44 . c) It is helpful to use the fact that to substitute . b v b b b r r / ˆ = a v 0 = + + c b a v v v ( ) b a c v v v + = Vectors and scalars Vectors – magnitude (unit), direction Scalar – magnitude (unit) Vectors and scalars All three arrows represent the same displacement The arrow and the two curved paths represent the same displacement Adding vectors b a s v v v + = ( ) ( ) ve) (associati (commute) c b a c b a a b b a v v v v v v v v v v + + = + + + = +

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