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From: merrill@rex.DEC
Newsgroups: net.physics
Subject: Re: Swimming in Liquid Helium
Message-ID: <511@decwrl.UUCP>
Date: Sat, 9-Feb-85 10:52:51 EST
Article-I.D.: decwrl.511
Posted: Sat Feb  9 10:52:51 1985
Date-Received: Mon, 11-Feb-85 04:05:23 EST
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Organization: DEC Engineering Network
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> Thus, the kinetic energy of the object will he converted to kinetic
> energy in the liquid.
> Gordon V. Cormack      CS Department, University of Waterloo

Even in REAL water WAVES do not slow down noticably!

An object in motion in a fluid without viscosity behaves like a wave.
Assuming frictionless and perfectly elastic collisions, 
the balls (Neutonian "liquid") left behind
have NO motion and hence have absorbed neither energy nor momentum. 
It DOES sound rediculous, doesn't it, but not too much more than swimming
in liquid helium.

Richard M. Merrill	M.I.T.