(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A toy rocket consists of a plastic bottle which is partially filled with water. The space above the water contains compressed air. At one instant during the flight of the rocket, water of density p is forced through the nozzle of radius r at speed v relative to the nozzle. Determine, in terms of p, r and v, the mass of water ejected per unit time from the nozzle

2. Relevant equations

3. The attempt at a solution

I know the answer is πr^{2}pv. But I am not sure of exact explanation why this is the case.

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# Homework Help: Toy Rocket Momentum problem

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