Groups > sci.physics.relativity > #671314

Re: The Relativity of Inertia

From	"Paul B. Andersen" <paul.b.andersen@paulba.no>
Newsgroups	sci.physics.relativity
Subject	Re: The Relativity of Inertia
Date	2026-06-24 20:16 +0200
Organization	A noiseless patient Spider
Message-ID	<111h6gu$37doh$1@dont-email.me> (permalink)
References	(16 earlier) <18bb85fde12be9bf$102985$2300$c2265aab@news.newsdemon.com> <111ense$2gqmg$1@dont-email.me> <18bbcf5191523f91$189606$2300$c2265aab@news.newsdemon.com> <111giv9$30n78$1@dont-email.me> <18bc07f3151bcd9d$240906$2346$c2365abb@news.newsdemon.com>

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Den 24.06.2026 15:38, skrev Maciej Woźniak:
> On 6/24/2026 2:43 PM, Paul B. Andersen wrote:
>> Den 23.06.2026 22:20, skrev Maciej Woźniak:
>>> On 6/23/2026 9:54 PM, Paul B. Andersen wrote:
>>>> Den 22.06.2026 23:56, skrev Maciej Woźniak:
>>>>> On 6/22/2026 7:10 PM, Paul B. Andersen wrote:
>>>>>>
>>>>>> Thanks for confirming that according to Maciej Woźniak,
>>>>>> co-moving objects can have different accelerations.
>>>>>
>>>>> Absolutely. 
>>>>
>>>> So according to Maciej Woźniak co-moving objects can
>>>> absolutely have different accelerations.

>>>>> Well, bodies are co-moving when they have
>>>>> the same velocity/first derivative of
>>>>> location in time. 
>>>>
>>>> Quite. v1 = v2.
>>>>

v1(t) = v2(t), v1(t+Δt) = v2(t+Δt)

If the bodies are co-moving, their velocities
are equal all the time, but their velocities
do not have to be constant.

>>>>> The acceleration/the
>>>>> second derivative - is independent on
>>>>> that.
>>>>
>>>> Independent of what?
>>>> If v1 = v2, then dv1/dt = dv2/dt and a1 = a2 

>> You do not seem to understand what the math says.
>> If v1 = v2 then a1 and a2 must be equal, or v1 and v2
>> would not stay equal.

This means that the bodies will stay co-moving
if and only if the accelerations are equal.

The math prove that Maciej Woźniak was wrong when he claimed:
"co-moving objects can absolutely have different accelerations."

> 
> You don't seem to understand what basic
> grammar says. If it is [equal] it
> can either stay [equal] or not.
> That it won't stay [equal] doesn't mean
> it isn't [equal]. Rather oppositely,
> we only use "it won't stay" if it
> is now.
> 

We leave it with these wise word from Maciej Woźniak.


-- 
Paul

https://paulba.no/

Thread

The Relativity of Inertia *Attention - Odd Bodkin* Y <Yborg@zenodo.com> - 2026-06-16 11:08 +1000
  Re: The Relativity of Inertia *Attention - Odd Bodkin* The Starmaker <starmaker@ix.netcom.com> - 2026-06-15 21:33 -0700
  Re: The Relativity of Inertia *Attention - Odd Bodkin* The Starmaker <starmaker@ix.netcom.com> - 2026-06-15 21:41 -0700
  Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-16 14:42 +0200
    Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-16 14:50 +0200
    Re: The Relativity of Inertia Y <Yborg@zenodo.com> - 2026-06-17 10:30 +1000
      Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-17 12:23 +0200
        Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-17 13:07 +0200
          Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-17 19:24 +0200
            Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-17 21:07 +0200
              Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-17 22:13 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-17 23:46 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-18 15:28 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-18 15:37 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-19 12:18 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-19 21:55 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-21 13:28 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-21 14:14 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-21 19:02 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-21 20:39 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-22 20:41 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-23 00:01 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-23 11:19 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-23 12:30 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-23 22:53 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-23 23:20 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-24 22:06 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-24 22:19 +0200
                Re: The Relativity of Inertia athel.cb@gmail.com <user12588@newsgrouper.org.invalid> - 2026-06-24 15:55 +0000
                Re: The Relativity of Inertia The Starmaker <starmaker@ix.netcom.com> - 2026-06-24 12:49 -0700
                Re: The Relativity of Inertia Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-06-18 08:17 -0700
            Re: The Relativity of Inertia Y <Yborg@zenodo.com> - 2026-06-18 10:56 +1000
              Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-18 10:21 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-18 12:17 +0200
        Re: The Relativity of Inertia Y <Yborg@zenodo.com> - 2026-06-18 01:15 +1000
          Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-17 22:04 +0200
            Re: The Relativity of Inertia Y <Yborg@zenodo.com> - 2026-06-18 10:47 +1000
              Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-18 14:38 +0200
                Re: The Relativity of Inertia Y <Yborg@zenodo.com> - 2026-06-19 06:55 +1000
                Re: The Relativity of Inertia The Starmaker <starmaker@ix.netcom.com> - 2026-06-18 21:22 -0700
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-20 15:32 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-21 05:31 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-21 13:39 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-21 14:15 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-21 14:17 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-21 19:40 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-21 20:38 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-22 19:10 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-22 23:56 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-23 21:54 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-23 22:20 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-24 14:43 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-24 15:38 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-24 20:16 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-24 20:24 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-24 21:15 +0200
                Re: The Relativity of Inertia Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-06-24 12:20 -0700
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-24 21:38 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-23 22:01 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-23 22:30 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-24 20:49 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-24 20:52 +0200
                Re: The Relativity of Inertia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2026-06-24 21:29 +0200
                Re: The Relativity of Inertia Maciej Woźniak <mlwozniak@wp.pl> - 2026-06-24 21:34 +0200
          Re: The Relativity of Inertia The Starmaker <starmaker@ix.netcom.com> - 2026-06-17 16:36 -0700
      Re: The Relativity of Inertia The Starmaker <starmaker@ix.netcom.com> - 2026-06-18 10:38 -0700

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