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| Proposition | 421 | Propositions are Abstract entities that express a complete thought or a set of such thoughts. A... | ^ |
| ScientificLaw | 4 | A generalization based on recurring facts or events (in science or mathematics etc) | ^ |
| NewtonsLaw | . | One of three basic laws of classical mechanics. | ^ |
| NewtonsFirstLaw | . | A body remains at rest or in motion with a constant velocity unless acted upon by an external force... | ^ |
| NewtonsSecondLaw | . | The rate of change of momentum is proportional to the imposed force and goes in the direction of th... | ^ |
| NewtonsThirdLaw | . | Action and reaction are equal and opposite. | ^ |
