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A speedboat moves on a lake with initial velocity vector 1,=8.09 m/s and 1,=−2.33 m/s , then accelerates for 5.05 s at an average acceleration of av,=−0.105 m/s2 and av,=0.102 m/s2 . What are the components of the speedboat's final velocity, 2, and 2, ?

Find the speedboat's final speed.