Newton's first law

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Definition

Noun: - A fundamental principle of classical mechanics: Newton's first law states that an object will remain at rest or continue moving in a straight line at a constant speed unless an external force acts upon it. This law is also known as the law of inertia.

Usage
  • This term is used specifically in the context of physics to describe the behavior of objects and the concept of inertia.
  • It is a proper noun referring to a specific scientific law formulated by Sir Isaac Newton.
Examples
Advanced Usage
  • "Demonstrate Newton's first law": To show or prove the principle through an experiment or example.
    • The teacher used a hover puck to clearly demonstrate Newton's first law.
  • "A consequence of Newton's first law": A result or effect that follows logically from the principle.
    • The fact that objects in space drift endlessly is a direct consequence of Newton's first law.
Variants and Related Words
  • Law of inertia: The common alternative name for Newton's first law.
  • Inertia (noun): The property of an object, described by Newton's first law, to resist changes in its state of motion.
  • Newtonian mechanics (noun): The branch of physics based on Newton's laws of motion.
Synonyms
  • Law of inertia: The most direct synonym.
  • First law of motion: A descriptive synonym.
Related Phrases
  • "An object at rest stays at rest...": The beginning of the common phrasing of the law.
  • "Unless acted upon by an unbalanced force": The conditional clause that completes the statement of the law.
Noun
  1. a body remains at rest or in motion with a constant velocity unless acted upon by an external force

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