A 72-kg fisherman in a 116-kg boat throws a package of mass m = 15 kg horizontally

A 72-kg fisherman in a 116-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.7 m/s as in the figure below. Neglectingwater resistance, and assuming the boat is at rest before the package is thrown, find the velocity of the boat after the package is thrown.
magnitude m/s

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