Physic Lecture_2 Notes

Physic Lecture_2 Notes - Turn in homework More homework due...

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•Turn in homework •More homework due tomorrow •I am not encouraging you (we want you here), but if you plan on dropping (or adding) the course, you better do it fast before fees are a problem.
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Last Time • 3.1 – From reality to model • 3.2 – Calibrating the data
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3 3.4 Position and Displacement • The motion of a particle is completely known if the particle’s position in space is known at all times. • In lab, you may have noticed… – Position depends on origin – Displacement does not
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4 3.4 Position and Displacement A particle’s position is the location of the particle with respect to a chosen reference point. This reference point can be considered to be the origin of the coordinate system. We will consider that the side mirrors on the car are the center point for our “particle”
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5 3.4 Position and Displacement Consider the Diagram, when we start collecting position data… – Take the road sign to be your origin ( x = 0 ) – Start your clock ( t = 0 ) and record the data once every 10 seconds – At position A (t = 0s) - the car is 30m to the right of the road sign (x = 30m ). – At position B (t = 10s) - the car is 52m to the right of the road sign (x = 52m ).
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6 3.4 Position and Displacement Position data… – At position C (t = 20s) - the car is 38m to the right of the road sign (x = 38m). – At position D (t = 30s) - the car is at the origin (x = 0m).
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This note was uploaded on 06/04/2009 for the course PHYS 2054 taught by Professor Stewart during the Spring '08 term at Arkansas.

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Physic Lecture_2 Notes - Turn in homework More homework due...

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