Question

What is meant by inertia​

Answer 1

Answer:

Inertia is a tendency to do nothing or to remain unchanged.

It is a property of matter by which it continues in its existing state of rest or uniform motion in a straight line unless that state is changed by an external force.

Answer 2

Answer:

Inertia is the resistance to a change in motion.

Therefore, an object at rest remains at rest and an object in motion remains in motion with the same velocity unless acted upon by an unbalanced/external force.