Lecture-02 - Introduction Lecture#02 Ch.1.5 1.8 Physics125...

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Introduction and Vectors L t #02 Ch 1 5 1 8 Lecture #02 – Ch. 1.5 – 1.8 Physics 125 – Fall 2010 Dr. Mike Melnichuk [email protected] Office: 2409 Randall Lab Offi H 2 00 4 00 / M & T i R 1416 R d ll L b Office Hours: 2:00 – 4:00 / Mon. & Tue. in Rm. 1416 Randall Lab.
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Scalars and Vectors SCALAR - quantity that can be described by a single number: e.g. temperature, mass, money. VECTOR - quantity having both magnitude and direction : di l t l it l ti f t e.g. displacement, velocity, acceleration, force, momentum. • The magnitude always has a positive value – a number. • The direction is specified mathematically by an angle which • The direction is specified mathematically by an angle which can be positive or negative – another number.
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