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Old Nov 14th 2017, 03:53 PM   #1
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Fluid dynamics problem

Can you help me to solve this problem ?

A jet-propelled boat is moving at a velocity of 10m/s. The river is flowing against the boat at 5m/s. Assuming the jet flow rate is 0.15m3/s and its discharge velocity is 20m/s, what is the propelling power of this boat? (Jet boats like this are in use.)
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Old Nov 15th 2017, 02:12 AM   #2
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So what have you done towards this?

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Describe the Physics of the situation in words. What does the jet motor add energy too?
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Old Nov 15th 2017, 06:28 AM   #3
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It might help to remember that the mass of one litre of water is one kilogram.
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