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LN_Sec_12-3

# LN_Sec_12-3 - RECTILINEAR KINEMATICS ERRATIC MOTION(Section...

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RECTILINEAR KINEMATICS: ERRATIC MOTION (Section 12.3) Today’s Objectives: Students will be able to determine position, velocity, and acceleration of a particle using graphs. In-Class Activities: Check homework, if any Reading quiz Applications s-t, v-t, a-t, v-s, and a-s diagrams Concept quiz Group problem solving Attention quiz

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READING QUIZ 1. The slope of a v-t graph at any instant represents instantaneous A) velocity. B) acceleration. C) position. D) jerk. 2. Displacement of a particle in a given time interval equals the area under the ___ graph during that time. A) a-t B) a-s C) v-t C) s-t
APPLICATION In many experiments, a velocity versus position (v- s) profile is obtained. If we have a v-s graph for the rocket sled, can we determine its acceleration at position s = 300 meters ? How?

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GRAPHING Graphing provides a good way to handle complex motions that would be difficult to describe with formulas. Graphs also provide a visual description of motion and reinforce the calculus concepts of differentiation and integration as used in dynamics.
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