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Example 3.2The position of an objectmoving along x axis is given by xs a + btwhere a#8,5 m, b 2.5 m s-2 and t ismeasured in seconds. What is its velocity at1-0 s and t 2.0 s. what is, the averagevelocity between t # 2.0 s and t 4.0 s ?

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