# Keyword Analysis & Research: inertia definition physics

## Frequently Asked Questions

What is the definition of inertia in physics?

Inertia is the name for the tendency of an object in motion to remain in motion, or an object at rest to remain at rest unless acted upon by a force. This concept was quantified in Newton's First Law of Motion .

What are the different types of inertia?

There are three types of inertia – the inertia of rest, the inertia of direction and the inertia of motion. Inertia of rest - It is the inability of a body to change its state by itself. Inertia of direction - The body cannot change its direction of movement by itself.

What are the laws of inertia?

Law of Inertia states that if a body is at rest or moving at a constant speed in a straight line, it will remain so unless it is acted upon by a force . Inertia is a property of a body that opposes any force that tries to move or modify the amplitude or direction of the motion of the body it is already moving.

What is the relationship between inertia and motion?

The inertia of direction is when the body offers resistance to continue moving in the same direction until an external force acts on it. The inertia of motion is when the body provides resistance to continue in a regular motion unless an external force acts on it. An example of law of inertia is the sudden start of a lift.