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The position of an object moving on a st...

The position of an object moving on a straight line is defined by the relation `x=t^(3)-2t^(2)-4t`, where x is expressed in meter and t in second. Determine
(a) the average velocity during the interval of 1 second to 4 second.
(b) the velocity at t = 1 s and t = 4 s,
(c) the average acceleration during the interval of 1 second to 4 second.
(d) the acceleration at t = 4 s and

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