what is the meaning of inertia?

Answer 1

the possed by a body

Answer 2

Inertia is the property of an object to remain constant in velocity unless acted upon by an outside force. The principle of inertia is one of the fundamental laws of classical physics which are used to describe the motion of matter and how it is affected by applied forces. Today, it is most commonly defined using Sir Isaac Newton's First Law of Motion, which states:

Every body perseveres in its state of being at rest or of moving uniformly straight ahead, except insofar as it is compelled to change its state by forces impressed. [Cohen & Whitman 1999 translation]

The description of inertia presented by Newton's law is still considered the standard for classical physics. However, it has also been refined and expanded over time to reflect developments in understanding of relativity and quantum physics which have led to somewhat different (and more mathematical) interpretations in some of those fields

Answer 3

Its like the opposite of gravity. Its the resulting force when a object is pushed or pull in a direction. 'A body in motion tends to stay in motion, unless acted upon'. Inertia is what gets that body moving. Gravity is the attraction of an object by a more massing object (caused by warped space-time)

Answer 4

aha. we were just learning about this like a couple of weks ago.

basicall it's a object's resistance to motion.

an object naturally does not want to move and will only move unless "acted upon by an outside/unbalanced force"

the more mass an object has, the more resistance it has, and more force is needed to move it.

inertia is the reason why a chair or book or rock won't move unless something pushes it.