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the acceleration a of a body moving in a straight line is given in terms of t by a=8-6t. If the velocity of the body

the acceleration a of a body moving in a straight line is given in terms of t by a=8-6t. If the velocity of the body is 25 at t=1 and if s(t) is the distance of the body from the origin at time t, what is s(4)-s(2)

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