To contain some unruly demonstrators, the riot squad approacheswith fire hoses.

Question

To contain some unruly demonstrators, the riot squad approacheswith fire hoses. Suppose that the rate of flow of water through afire hose is 24 kg/s and the stream of water from the hose moves at17 m/s.
a) What force is exerted by such a stream on a person in thecrowd? Assume that the water comes to a dead stop against thedemonstrator's chest. Magnitude only.
a) What force is exerted by such a stream on a person in thecrowd? Assume that the water comes to a dead stop against thedemonstrator's chest. Magnitude only.

Explanation / Answer

F=mv/t=24*17=408N

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