Half a croissant, on a plate, with a sign in front of it saying '50c'
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Bouncy Ball Cradle

Conservation of momentum and energy via bouncy balls
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Should keep the office 'Newton's balls' fans happy for a while now that the swinging metallic spheres have been replaced with bouncy Polybutadiene power balls.
skinflaps, Mar 21 2012

Bouncy Balls http://en.wikipedia.org/wiki/Bouncy_ball
Swing these [skinflaps, Mar 21 2012]

Newton's cradle http://en.wikipedia...nimation_book_2.gif
Sir Isaac Newton's version [skinflaps, Mar 21 2012]

[link]






       Steel balls will keep swinging much longer.
MechE, Mar 21 2012
  

       whatever! thought this would be about cat cradle...   

       hey, when are you coming to see us?
po, Mar 21 2012
  

       Rubber deforms far more than steel does, absorbing more energy with each impact. That is, in fact, why it is frequently employed as an impact absorber. There's also the issue of weight and momentum.
Alterother, Mar 21 2012
  

       yeah, we knew that!   

       <marked for tagline!> :)
po, Mar 21 2012
  

       <sticks tongue out at [po]> Nyeah!
Alterother, Mar 21 2012
  

       Just place it next to a wall.
skinflaps, Mar 21 2012
  

       ...and?
Alterother, Mar 21 2012
  
      
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