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Resource: PS51-Създаване на люлка на Нютон - conserva...
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PS51-Making a Newton_s Cradle - conservation of momentum, mass, and valocity-EN

PS51-Making a Newton_s Cradle - conservation of momentum, mass, and valocity-EN

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PS51-Making a Newton_s Cradle – conservation of momentum, mass, and valocity-EN

PS51-Making a Newton_s Cradle – conservation of momentum, mass, and valocity