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A speedboat starts from rest and accelerates at +2.01 m/s2 for 7.15 s. At the end of this time, the boat continues for an additional 6.25 s with an acceleration of +0.518 m/s2. Following this, the boat accelerates at -1.49 m/s2 for 8.55 s.
(a) What is the velocity of the boat at t = 21.95 s?
(b)(b) Find the total displacement of the boat.

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