PURPOSE: To demonstrate two-dimensional collisions qualitatively.
DESCRIPTION: Dry ice in the containers vaporizes, ejecting carbon dioxide gas under pressure out through a small hole under the puck. This provides a layer of gas between the puck and the glass surface to create relatively friction-free motion. Use the two pucks to create two-dimensional elastic collisions.
REFERENCES: (PIRA 1N40.24)
EQUIPMENT: Two dry ice pucks on glass table, as photographed.
SETUP TIME: 15 min. (Dry ice must be retrieved from Chemistry.)
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