Re: Relativistic Radio

From	Odd Bodkin <bodkinodd@gmail.com>
Newsgroups	sci.physics
Subject	Re: Relativistic Radio
Date	2015-09-14 09:32 -0500
Organization	Aioe.org NNTP Server
Message-ID	<mt6lqb$1pp$3@speranza.aioe.org> (permalink)
References	(10 earlier) <msusen$m3$1@dont-email.me> <msuv3d$bom$1@speranza.aioe.org> <6eb355ae-0ce9-4a02-8cf3-bdbacba8a07b@googlegroups.com> <mt2bkn$nmt$1@dont-email.me> <0733dab1-fdab-43ae-8d06-113152095cd8@googlegroups.com>

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On 9/13/2015 1:09 AM, jaymoseley@hotmail.com wrote:

>
> In your first example above where the ball ejector is still you have the ball gaining
> kinetic energy 1/2.m.x^2.
> But you forgot to take into account the fact that the target is moving towards
> the ball ejector at speed y in this example. Therefore ball hits the moving target
> at speed x+y . Not at speed x
> So shouldnt the calculation for the first example  be the same as the second example?
>   Ie... 1/2 . m . (x+y)^2.
> The important speed is not how fast the ball moves relative to the ejector, but
> rather how fast it hits the target.
>

Jay, this is material that is covered in the collisions (elastic and 
inelastic) chapter of a freshman textbook. Have you tried working 
through some problems there?

-- 
Odd Bodkin --- maker of fine toys, tools, tables

Thread

Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-06 20:21 +0000
  Re: Relativistic Radio Double-A <double-a3@hush.com> - 2015-09-06 14:34 -0700
    Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-06 21:47 +0000
  Re: Relativistic Radio pcardinale@volcanomail.com - 2015-09-06 17:36 -0700
    Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-07 01:56 +0000
      Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-07 07:15 +0200
        Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-07 05:44 +0000
          Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-07 08:50 +0200
      Re: Relativistic Radio pcardinale@volcanomail.com - 2015-09-07 15:16 -0700
      Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-08 10:04 -0500
        Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-08 16:59 +0000
          Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-08 12:41 -0500
            Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-08 18:24 +0000
          Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-08 21:22 +0200
        Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-08 17:43 +0000
          Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-08 12:47 -0500
            Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-08 19:26 +0000
        Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-10 01:58 -0700
          Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-10 19:16 +0200
            Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-10 19:42 +0200
              Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-11 00:53 -0700
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-11 06:07 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-11 15:08 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-11 15:28 +0200
                Re: Relativistic Radio Mahipal <mahipal7638@gmail.com> - 2015-09-11 06:31 -0700
                Re: Relativistic Radio "Phony McNymster" <invalid@example.com> - 2015-09-11 07:42 -0700
                Re: Relativistic Radio Mahipal <mahipal7638@gmail.com> - 2015-09-11 07:59 -0700
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-11 07:16 -0700
                Re: Relativistic Radio Sam Wormley <swormley1@gmail.com> - 2015-09-11 09:41 -0500
                Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-11 09:49 -0500
                Re: Relativistic Radio Fabian Russell <root@localhost.localdomain> - 2015-09-11 18:18 +0000
                Re: Relativistic Radio noTthaTguY <abu.kuanysh05@gmail.com> - 2015-09-11 11:24 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-12 11:20 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-12 06:21 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 02:04 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-13 00:07 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 09:22 +0200
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 09:59 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-13 03:44 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-14 07:33 +0200
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-14 07:49 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 01:07 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-14 10:40 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 03:40 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-14 13:19 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 04:55 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-14 15:01 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-14 16:36 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 12:18 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-15 08:29 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 02:41 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 12:11 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 06:06 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 15:40 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 06:06 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 15:59 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 09:39 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 18:47 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 10:10 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-15 19:57 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 11:14 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-15 20:23 +0200
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-15 20:31 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 12:21 -0700
                Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-15 13:30 -0500
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 00:57 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-14 14:50 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 12:57 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-15 08:37 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 03:06 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 13:10 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 13:15 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-15 06:43 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 16:11 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 18:26 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 18:35 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 16:44 +0200
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-14 08:15 +0200
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-14 08:44 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-11 17:38 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-11 18:00 +0200
                Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-11 11:22 -0500
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-12 12:29 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 01:16 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-12 23:09 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 08:35 +0200
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 08:44 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-12 23:50 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 09:14 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-13 05:24 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-14 07:35 +0200
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 01:01 -0700
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-14 10:39 +0200
                Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-14 09:34 -0500
                Re: Relativistic Radio jaymoseley@hotmail.com - 2015-09-14 12:31 -0700
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-15 08:53 +0200
                Re: Relativistic Radio Poutnik <Poutnik4NNTP@gmail.com> - 2015-09-15 10:22 +0200
                Re: Relativistic Radio Poutnik <poutnik4nntp@gmail.com> - 2015-09-13 09:08 +0200
                Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-14 09:32 -0500
                Re: Relativistic Radio Odd Bodkin <bodkinodd@gmail.com> - 2015-09-14 09:31 -0500

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