Path: ...!weretis.net!feeder8.news.weretis.net!fu-berlin.de!uni-berlin.de!news.dfncis.de!not-for-mail From: Luigi Fortunati Newsgroups: sci.physics.research Subject: Re: Newton e Hooke Date: Sat, 22 Feb 2025 18:13:51 +0100 Organization: A noiseless patient Spider Lines: 13 Approved: hees@itp.uni-frankfurt.de (sci.physics.research) Message-ID: References: Reply-To: fortunati.luigi@gmail.com X-Trace: news.dfncis.de sY9o7VCF01vBe8R6jIzMXwLeYndo9nzkZBkjbHrEYScOyXhg5Q/Czd8IDi Cancel-Lock: sha1:7JDrcqF4+SKsffvFt0BDkS2lw/g= sha256:xuTW2l9sBK5XbztZIWJQeLGkgt9EJAQpsBEf1RryEXc= Bytes: 1874 In my animation https://www.geogebra.org/m/rs4cfxzg body A of 5 particles collides inelastically with body B of 3 particles. Before the collision, the total momentum p=+2 is entirely owned by body A, because body B has no positive momentum. After the collision, it is true that the total momentum does not change (it always remains equal to p=+2), but it no longer belongs entirely to body A because 0.75 passes to body B. In fact, at the end of the collision, the positive momentum p=+2 belongs "only" in part to body A (p=+1.25) and the rest has transferred to body B (p=+0.75). How is it possible that, during the collision, there is a transfer of momentum from body A to body B if the action of body A on body B is *equal* to the opposite reaction of body B on body A? And why does this transfer of momentum from A to B not occur in the first three instants and only occurs in instants 4 and 5? Luigi Fortunati