Happy and Sad Balls

AR1080391_Happy_Sad_Balls.jpg
AR1080391_Happy_Sad_Balls.jpg

Happy and Sad Balls

A$15.00

Code: AR1080391

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Happy and Sad Ball, 2.5cm in diameter and can be used to demonstrate the difference between elastic and inelastic collisions. These have virtually the same density, mass and appearance. When these balls are thrown down, one bounces while the other hits the surface and lies there