What is Newton's first law of motion?
PhysicsClass 10CBSEAnswered 28 May 2026
Answer
Newton's First Law (Law of Inertia): An object at rest stays at rest, and an object in motion stays in uniform motion in a straight line, unless acted on by an external unbalanced force.
Inertia: The natural tendency to resist any change in motion state.
Real-life examples: Book lying on a table; passengers lurching forward when a bus brakes; dust flying off a beaten carpet.
Newton's First Law says objects resist any change in their motion state unless an external unbalanced force acts on them.
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