A 77-kg fisherman in a 113-kg boat throws a package of mass m = 15 kg horizontal

Question

A 77-kg fisherman in a 113-kg boat throws a package of mass

m = 15 kg

horizontally toward the right with a speed of

vi = 4.2 m/s

as in the figure below. Neglecting water resistance, and assuming the boat is at rest before the package is thrown, find the velocity of the boat after the package is thrown.

A 77-kg fisherman in a 113-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.2 m/s as in the figure below. Neglecting water 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 direction

Explanation / Answer

Conservation of momentum

m1 v1 = m2 v2

(77 + 113) * v1 = 15 * 4.2

v1 = 0.33 m/s

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