chap2 - Motion in One Dimension Position, Velocity, and...

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1 Motion in One Dimension Position, Velocity, and Speed • Particle model – the moving object is described as a point-like particle with mass m . • Position x of the particle is its location at time t . Knowing the position x(t) completely determines its motion … • Displacement Δ x = x f – x i is the change in position in a given time interval. • Distance is the length of the path followed by the particle.
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2 Position-time Graph • Average velocity • Average Speed Running to the Gate with a Problem … • Running to your airport gate you forgot to get coffee. ..
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3 Instantaneous Velocity • Instantaneous velocity • Instantaneous speed is the magnitude of the instantaneous velocity. Some Calculus t A t x × = ) ( 2 ) ( t B t x × =
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Consider the following position-time graph 1 2 3 29 41 226 t v 1. t v 2. t v 3. Which of the following velocity time graphs best describes the particle’s motion? t
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This note was uploaded on 09/25/2011 for the course PHYS 131 taught by Professor Bennewitz during the Spring '07 term at McGill.

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chap2 - Motion in One Dimension Position, Velocity, and...

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