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mysnoopy
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Several species, including the squid, cuttlefish, dragonfly fish and many microscopic organisms, move themselves around by a kind of jet propulsion.
In each case the animal absorbs fluid in a body cavity and expels it through an orifice by contracting the cavity. If a squid has a mass Ms when its cavity is empty, and can store mass Mw of water in the cavity, write down an expression relating the velocity of the squid Vs to the two masses and the velocity of the expelled water, Vw.
In each case the animal absorbs fluid in a body cavity and expels it through an orifice by contracting the cavity. If a squid has a mass Ms when its cavity is empty, and can store mass Mw of water in the cavity, write down an expression relating the velocity of the squid Vs to the two masses and the velocity of the expelled water, Vw.