Skip to content 
What is inertia?
Inertia is the property of the matter which is the resistance persuaded by a matter to change its state, each object has a mass that tends to resist the external forces responsible for moving it from one state to another state, this physical property of matter is called inertia.
According to the first law of motion, an object remains in its own state until and unless an external force is applied to it. The first law of motion clears the concept of inertia, inertia relates to the first law of the motion because according to it a body opposes a change in itself, this characteristic of a thing with mass opposing a change is known as inertia, therefore it is the inertia of the object due to which if a body is in moving state it remains in moving state and if the object is in the static position it remains in a static position.
What is the difference between Atom and Molecule?
What is inertia?
Table of content:
- Definition of inertia
- First Law of motion
- Types of Inertia
- Examples of Inertia
Definition of inertia:
Inertia is defined as a property of matter by which it remains at the state of rest or in uniform motion in the same straight line unless acted upon by some external force. If a body is in a motion then it remains in the same motion or if a body is in a state of rest it remains in the rest position until and unless an external force applies to it.
First Law of the Motion:
To understand the concept of inertia we are needed to understand the First law of motion, Newton’s first law of motion states that if a body remains in its own state of action until and unless an external force is applied to it.
Types of Inertia:
The Inertia of rest: If a body is rest position then it remains in the rest position until an external force is applied to it.
The inertia of motion: If a body is in a state of uniform motion then it remains in the same uniform motion until an external force is applied to it.
The Inertia of direction: If a body is moving in a certain direction then it remains in the same direction until an external force is applied to it.
Examples of Inertia:
1. If the cardboard is arranged to be kept in the mouth of a tumbler and a coin is placed on the cardboard, when we drag the cardboard to our side by catching one of the ends, the coin falls inside the tumbler, here coin maintains its own initial state and fell inside the tumbler.
2. When a driver suddenly stops the bus, the passenger’s head is stuck on the next seat, it happens because the seats and the lower part of the passenger’s body are attached to the bus. The lower part of the body comes to the rest position with the bus but the upper part of the body due to the inertia carried at the same speed as that of the bus, the head of the passenger is struck on the next seat.
3. The satellite around the earth carried on a uniform circular motion after launching to space, it maintains the circular motion under the impact of the constant gravitational force, since there is no external force acting on the satellite, it revolves around the earth with uniform circular motion.
Class 9 Physics Important Notes
Average Speed and Average velocity
Momentum: Definitions,units,formula and Uses in real life:Class 9 CBSE
Thrust and Pressure : Difference
Archimedes Principle: Complete detail
CBSE IX Class Science Sample Papers
Class 9 Chemistry Important Notes
Evoporation,Vapourization and Latent heat
How does the water kept in an earthen pot become cold during summer?
What are the factors affecting evaporation?,
What is the difference between solution,colloid and suspension?
What is the difference between element and the compound?
Determining Valency, Net Charge and Molecular Formula
Molar mass,molecular mass and mole concept
If energy is conserved then why do we need to save it for future generations?
Class 9 Biology Important Notes
Structure and Function of Cell : Cell Biology
Types of plant tissues : Class 9 CBSE Notes
Animal Tissues : Class 9 Science CBSE
Class 9 Science previous years Question papers with solutions and important questions and answers
CBSE Class 9-Question paper of science 2020 with solutions
CBSE Class 9-Sample paper of science
CBSE Class 9-Unsolved question paper of science 2019
Click the link for NCERT Solutions for classes 9,10,11 and 12 of Maths & Science
NCERT Solutions and CBSE notes for Class 9,10,11 and 12 of Maths and Science
NCERT Solutions of Class 9 Science : Chapter 1 to Chapter 15
NCERT Solutions of Class 9 Maths : from chapter 1 to 15
NCERT Solutions Class 10 Science from chapter 1 to 16
NCERT Solutions of all chapters of Maths for Class 10 from Chapters 1 to 15
NEET Syllabus and its preparation
Specific notes for the preparation of 10 class CBSE board exam for achieving excellent marks
What to do to pass in maths CBSE X th board exam ?
Tips to get success in competitive exams
NCERT Solutions of class 9 science
