Lecture1 - Classical Mechanics Study motion of objects: Why...

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Classical Mechanics Study motion of objects: Why and how objects move. Classical in contrast to Quantum mechanics, which deals with motion of objects at atomic level Kinematics Description of motion: Position x(t), velocity v(t), acceleration a(t), …. Alternative description: Energy (E) and Momentum (p) Dynamics Causes of motion: Forces that causes motion F=ma, …
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Whenever we describe the different phenomena that surround us we need to keep in mind the following aspects: Reference Frame Description of motion of any object is never absolute Uncertainty and significant figures Measurements are never precise Units Dimension of a quantity have a meaning if refer to units
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Reference Frame • Description of motion of any object is never absolute • Any measurement in physics is made with respect to a reference frame Define a set of COORDINATE AXES Important to define an origin origin x y • The train has traveled 5 km • The train is 2 km away From the departing station From the next station
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Is the train moving?
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This note was uploaded on 04/03/2008 for the course PHYSICS 7A taught by Professor Lanzara during the Spring '08 term at University of California, Berkeley.

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Lecture1 - Classical Mechanics Study motion of objects: Why...

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