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• March 1, 2022

• <number>

• PHY101 Physics I © Dr.Cem Özdoğan

• Scalars and Vectors
• Scalars have magnitude only
• Vectors have magnitude and direction
• Both have units!

• Adding Geometrically
• Obeys commutative and associative laws

• Unit Vector Notation
• We can write vectors in terms of unit vectors

• Vector Components
• Given by
• Related back by

• Eq. (3-2)

• Eq. (3-5)

• Eq. (3-7)

• 3 Summary

• Eq. (3-3)

• Eq. (3-6)

• Adding by Components
• Add component-by-component

• Eqs. (3-10) - (3-12)

• Scalar Product
• Dot product

• Eq. (3-22)

• Eq. (3-20)

• March 1, 2022

• <number>

• PHY101 Physics I © Dr.Cem Özdoğan

• Scalar Times a Vector
• Product is a new vector. Magnitude is multiplied by scalar. Direction is same or opposite.

• Cross Product
• Produces a new vector in perpendicular direction
• Direction determined by right-hand rule

• 3 Summary

• Eq. (3-24)