position of a body changes with time as x= (t² - 4) m, where t is in second. the average velocity of the body in first 2 s is
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Explanation:
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X = T² - 4
V = 2T
V AT 0 SEC = 0 m/s²
V AT 2 SEC = 4 m/s²
AVERAGE VELOCITY = (4-0)/2 = 2 m/s²
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