The boat has a mass of 180 kg and is traveling forward on a river with a constant velocity of 70 km/h, measured relative to the river. The river is flowing in the opposite direction at 5 km/h. if a tube is placed in the water, as shown and it collects 40kf of water in the boat in 80s; determine the horizontal thrust T on the tube that is required to overcome the resistance to the water collection. P w = 1 Mg / m3.

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R =5 km/h