The position of a hummingbird flying along a straight line in t seconds is given by s(t) = 2t-9t meters. %3D (a) Determine the velocity of the bird at t = 5 sec. meter/sec (b) Determine the acceleration of the bird at t = 5 sec. meter/sec? (c) Determine the acceleration of the bird when the velocity equals 0. meter/sec2

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