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A fire hose is turned on the door of a burning building in order to knock the door down. Thisrequires a force of 1000 N. If the hose delivers 40 kg per second, what is the minimum velocityof the stream needed, assuming the water doesn't bounce back?A) 15 m/sB) 20 m/sC) 25 m/sD) 30 m/s
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