Happy/Sad Ball Kit
Product Number: SB33947M
In Stock (Ships within 1-2 business days)
Two rubber balls that look, feel, and squeeze the same - but try bouncing them! These intriguing inelastic and elastic collision balls are popularly called “happy and sad.” One ball rebounds normally while the other is as bounceless as a piece of clay! Instructions included.
|Brand : Science First|
|Type : Regular|
|Manufacturer Part Number : P6-1000|
|Simulator Configurator : false|