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# L02a - Physics 111 Lecture 2a"You must learn from the...

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1 / 11 Physics 111 Lecture 2a “You must learn from the mistakes of others. You can’t possibly live long enough to make them all yourself.” –Sam Levenson

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Motion Motion Displacement Speed velocity Acceleration Question Practice problems 2 / 11 Things move Kinematics: study of motion Chapter 2 will focus on motion in one dimension Any description of motion involves three basic concepts: Displacement Velocity Acceleration
Displacement Motion Displacement Speed velocity Acceleration Question Practice problems 3 / 11 Nearly the first thing you do in any Mechanics problem is to define a coordinate system Choosing a proper coordinate system can make a huge difference In one dimension it is rather easy: Choose an origin Choose a positive direction x is defined as the position compared to the origin Displacement Δ x is defined as difference between positions: Δ x = x 2 - x 1 (1) Distance d is the total length travelled. d 0 only

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Displacement Motion Displacement Speed velocity Acceleration Question Practice problems 4 / 11
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L02a - Physics 111 Lecture 2a"You must learn from the...

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