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Magic Rollback Can

Yellow can

Concept Overview:

1. Conservation of Energy

Lecturer Procedure

Step(s) to Follow Expected Result
Roll the can away from you Can will roll away, stop, and reverse direction
Explanation: When the can comes to a stop, it has some potential energy stored in the rubber band inside, which is then converted to kinetic energy as the can moves back the other direction.  Open the can to show the rubber band as the source of the energy storage and transfer

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M: EngMom - 015