Lecture 3

# Lecture 3 - Lecture 3 pls-3.1 Vectors Media 1 Tennis ball 2...

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Lecture 3 pls-3.1 Vectors Media: 1. Tennis ball 2. Fendt web site—vector addition demo 1. Introduction to Vectors A vector is a quantity that has both magnitude (size) and direction . Example: The displacement of a tennis ball from one position to another position is a vector quantity. Graphically represent a vector with an arrow. Mathematically represent position (vector) with the symbol A r . The tennis ball can be moved again, through the displacement B r , producing the total displacement R r . The relationship of A r , B r and R r is expressed as B A R r r r + = . Arrow indicates a vector quantity. A r B r R r magnitude = 1 m (from origin) = length of arrow direction = north-east of origin = direction arrow points North A r

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Lecture 3 pls-3.2 2. Graphical Vector Algebra i. Addition . Fendt web site . “Head to Tail” Translate one vector until its tail is at the head of the other vector. Translate either vector. ii.
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Lecture 3 - Lecture 3 pls-3.1 Vectors Media 1 Tennis ball 2...

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