bn:00034784n
Noun Concept
EN
first law of motion  Newton's first law of motion  Newton's first law
EN
A body remains at rest or in motion with a constant velocity unless acted upon by an external force WordNet 3.0
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EN
A body remains at rest or in motion with a constant velocity unless acted upon by an external force WordNet 3.0 & Open English WordNet
The observation that objects in motion tend to stay in motion, and objects at rest tend to stay at rest unless an outside force acts upon them. Wiktionary
WordNet 3.0 & Open English WordNet
Wiktionary