From: fortunati.luigi@gmail.com   
      
   Richard Livingston luned=EC 10/10/2022 alle ore 05:21:46 ha scritto:   
   > ...   
      
   La forza rossa che su tuo suggerimento ho aggiunto al vagone rigido   
   della mia animazione   
   https://www.geogebra.org/m/adsgahwf   
   secondo il tuo parere, c'=E8 o non c'=E8?   
      
   >> Is the acceleration of the two vagons the same?   
   >   
   > No, not initially.  The water wagon will initially accelerate faster as   
   > the effective mass is less (because the water is not moving yet).  But   
   > when the water sloshes back, towards the rear, it will slow down.  The   
   > exact motion depends on the "impedance" of the tractor pulling the   
   > wagons.   
      
   The water cannot move back and forth because the tank car is totally   
   full and there are no empty spaces.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)