Chapter 3 Vectors

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Chapter 3 - Vectors

• Trigonometry

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SCALAR VS. VECTOR

• SCALAR a quantity with a magnitude only. For
  example distance 5 m,
• Speed 35 mph
• VECTOR a quantity with a magnitude and a
  direction. For example,
• displacement 5 m north
• Velocity 25 m/s _at_ 30 west of north

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Vector Components
Ax A cos q Ay A sin q A2 Ax2 Ay2 q
tan-1(Ay/Ax )
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Unit Vectors-1
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Unit Vectors-2
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Vector Addition-Polygon Method
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Vector Addition Polygon (2)
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Vector Addition ParallelogramMethod
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Adding Vectors- Trigonometric Method
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Subtracting Vectors
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Dot Product (Scalar Product)
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Vector Product (Cross Product)

• A x B ABsin q

i (AyBz AzBy) j (AzBx AxBz) k (AxBy
AyBx)