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Resource: ST51 - Правене на люлка на Нютон - conserva...
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ST51-Making a Newton_s Cradle - conservation of momentum, mass, and velocity-RO

ST51-Making a Newton_s Cradle - conservation of momentum, mass, and velocity-RO

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ST51-Making a Newton_s Cradle – conservation of momentum, mass, and velocity-RO

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