# What is inertia definition in physics?

## What is inertia definition in physics?

inertia, property of a body by virtue of which it opposes any agency that attempts to put it in motion or, if it is moving, to change the magnitude or direction of its velocity. Inertia is a passive property and does not enable a body to do anything except oppose such active agents as forces and torques.

What is inertia short define?

1 : a property of matter by which it remains at rest or in motion in the same straight line unless acted upon by some external force. 2 : a tendency not to move or change He stayed at the job mostly because of his inertia.

### What is inertia force simple definition?

inertial force, also called Fictitious Force, any force invoked by an observer to maintain the validity of Isaac Newton’s second law of motion in a reference frame that is rotating or otherwise accelerating at a constant rate.

What is inertia define with example?

Inertia resists change in motion. Objects want to stay in rest or motion unless an outside force causes a change. For example, if you roll a ball, it will continue rolling unless friction or something else stops it by force.

## What is inertia in your own words?

Answer: inertia. noun. Physics The tendency of a body at rest to remain at rest or of a body in straight line motion to stay in motion in a straight line unless acted on by an outside force; the resistance of a body to changes in momentum.

What is inertia class 9th?

Inertia: Inertia can be defined as the characteristic of an object which resists changes to the state of the motion of the object.

### Is inertia a force explain?

The force of inertia is the property common to all bodies that remain in their state, either at rest or in motion, unless some external cause is introduced to make them alter this state. Bodies do not display this force except when one alters their state; at which point it is called resistance or action.

What is inertia force and viscous force?

We all have regularly heard of the terms like viscous force and the inertial force. Now the viscous forces are the forces due to to the friction between the the layers of any real fluid. Inertial force (in the direction of flow) and viscous force (in the reverse direction of flow) act in opposite direction.

## What is inertia explain with example class 9?

When a tree is shaken vigorously, its fruits and leaves fall down. When a tree is shaken, it comes in motion. But the fruits and leaves remain at rest due to inertia. Thus, they fall off due to the force of gravity. When a car/bus takes a sharp turn, we tend to fall sideways.

What is inertia in a sentence?

(physics) the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force. 1 I’m unable to throw off this feeling of inertia. 2 We had a feeling of inertia in the afternoon. 3 She lapsed into inertia and lay there as if asleep. 4 Inertia carried the plane onto the ground.

### How do you explain inertia to a child?

Inertia is the tendency of a body to resist a change in motion or rest. When a vehicle stops, you tend to jerk forward before coming to a complete stop. In the same way, you will jerk backwards when the vehicle begins to move.

What is the formula for inertia in physics?

Calculate the rotational inertia for a thin-shelled hollow sphere of radius “r” and mass “m” by the formula, inertia = 2/3(m)(r)(r). Calculate the rotational inertia for a solid sphere of radius “r” and mass “m” by the formula, inertia = 2/5(m)(r)(r).

## What are the Three Laws of inertia?

Instead, you’ll find three different types of inertia including: Inertia of rest – An object stays where it is placed, and it will stay there until you or something else moves it. (i.e. Inertia of motion – An object will continue at the same speed until a force acts on it. (i.e. Inertia of direction – An object will stay moving in the same direction unless a force acts on it. (i.e.

What is the correct definition of inertia?

Science definitions for inertia. The resistance of a body to changes in its momentum. Because of inertia, a body at rest remains at rest, and a body in motion continues moving in a straight line and at a constant speed, unless a force is applied to it. Mass can be considered a measure of a body’s inertia.

### What is the physics of the law of inertia?

Law of inertia, also called Newton’s first law, postulate in physics that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force. The law of inertia was first formulated by Galileo Galilei for horizontal motion on Earth and was later generalized by RenĂ© Descartes.