PHY2048_08-31-09 - Chapter 3 Vectors Lecture 4 Scalars...

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Chapter 3: Vectors Lecture 4 8/31/09
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Scalars & Vectors In physics, there are two types of mathematical objects that are extremely useful: scalars and vectors Scalars represent quantities that are fully described by just a number, such as a magnitude. i.e. T. Tebow can throw the ball 50 yards Vectors represent quantities that are fully described by a magnitude AND a direction, i.e. T. Tebow can throw the ball 50 yards TO Carl Moore
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Scalars & Vectors in Physics Scalars Vectors Mass (m) Displacement/Position (r) Time (t) Velocity (v) Energy (E) Acceleration (a) Pressure (P) Force (F) Temperature (T) Momentum (p)
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Vector Mathematics In this chapter we’ll cover how to do the following mathematical operations on vectors: Addition/Subtraction Geometric vector addition and subtraction Resolving a vector into its components The concept of unit vectors Add and subtract vectors by components Multiplications Multiplication of a vector by a scalar The scalar (dot) product of two vectors The vector (cross) product of two vectors
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Vectors
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