Commonly Used Words. Arranged alphabetically, these sections include spelling, usage, punctuation and capitalization notes for specific words and phrases commonly used in the CSU. An entry without an explanation is simply to indicate the correct spelling of a word or words. A B-C D-F G-M N-S T-Z.
Noun. 1. Newton's first law of motion-a body remains at rest or in motion with a constant velocity unless acted upon by an external force. first law of motion, Newton's first law. law of motion, Newton's law, Newton's law of motion-one of three basic laws of classical mechanics.
Newton's Three Laws of Motion and his Law of Gravity are probably the most famous of all physics. They govern the motion of objects that we see in our everyday lives. Newton's First Law of Motion says that an object will remain in its state of motion unless acted upon by force. Essentially, this means that if an object is not moving, it will remain still until a force (a push or pull) acts on it.