Physics notes for class 11 Science : Inertia Physics notes for class 11 : Newton’s First Law defines Inertia: According to Newton’s first law of motion, a body remains to be in a state of rest or of uniform motion unless and until it is acted upon by an external force to change its state.This inability of a body to change by itself its state of rest or of uniform motion along a straight line is called inertia of that body. Newton’s first law is called the Law of Inertia So, one can define Inertia as “ the tendency of an object to stay at rest or in motion ”. Quantitatively, the inertia of a body is measured by the mass of the body that means heavier the body greater is its inertia. Types of Inertia: Inertia of Rest : The tendency of a body to remain in its state of rest is called Inertia of Rest. That means a body at rest remains at rest and cannot move on its own. Example: A person standing in a bus falls backward w...
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