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TRAIGHT LINEFigure 3.25 gives a speed-time graph ofa particle in motion along a constantdirection. Three equal intervals of timeare shown. In which interval is theaverage acceleration greatest inmagnitude? In which interval is theaverage speed greatest ? Choosing thepositive direction as the constantdirection of motion, give the signs of vand a in the three intervals. What arethe accelerations at the points A, B, Cand D?2Fig. 3.25al Exercisesluntor uniformly with 1 m s2 or

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