newton's law of motion

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Definition
  1. Noun:
    • Newton's law of motion: One of three fundamental principles that describe the relationship between the motion of an object and the forces acting upon it, forming the basis of classical mechanics.
Usage
  • Noun:
    • Newton's law of motion is essential for understanding how objects move.
    • Engineers apply Newton's law of motion when designing vehicles.
    • The first of Newton's law of motion is often called the law of inertia.
Advanced Usage
  • "to be governed by Newton's law of motion": to have its motion described by these principles.
    • The orbit of a planet is governed by Newton's law of motion.
  • "in accordance with Newton's law of motion": acting in a way that follows these principles.
    • The rocket's acceleration was calculated in accordance with Newton's law of motion.
Variants and Related Words
  • Newton's first law (law of inertia): An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.
  • Newton's second law (F=ma): The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
  • Newton's third law (action-reaction): For every action, there is an equal and opposite reaction.
  • Law of motion: A more general term for a principle describing motion.
Synonyms
  • Law of motion: A fundamental rule governing movement.
  • Principle of dynamics: A basic truth describing forces and motion.
Related Phrases
  • To obey a law of motion: To behave as described by the principle.
    • A falling object obeys the laws of motion.
  • To derive from the laws of motion: To be logically concluded from these principles.
    • This equation is derived from Newton's laws of motion.
Related Idioms
  • It's not rocket science: (Informal idiom) Used to say something is not very difficult to understand. (This idiom humorously references the complex physics, including Newton's laws, behind rocketry).
    • Just follow the instructions; it's not rocket science.
Noun
  1. one of three basic laws of classical mechanics

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