A speedboat starts from rest and accelerates at 201 ms2 for, Ask an Expert

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A speedboat starts from rest and accelerates at +2.01 m/s² for 7.00s. At the end of this time, the boatcontinues for an additional 6.00s with an acceleration of +0.518m/s². Following this, the boat accelerates at -1.49m/s² for 8.00s.

a) What is the velocity of the boat at t=21.0s?

b) Find the total displacement of the boat.

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