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Newtons Laws of motion: Variable mass

Q- A boat of mass 250kg is coasting, with its engine in neutral, through the water at speed 3.00m/s when it starts to rain. The rain is falling vertically, and it accumulates in the boat at the rate of 10.0 kg/hr.What is the speed of the boat after time 2.00hr has passed? Assume that the water is still and its resistance is negligible.

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