Скачать или смотреть 9th Class Physics New Book Chapter 4 Numericals|9th physics numerical chapter 4

This is the new book of class 9 physics published by Punjab curriculum and textbook board Lahore for all Punjab boards.
In this video we will discuss about 9th class physics new book 2025
complete chapter no 4

9th Physics New Book 2025...
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Define Physics?
Define Mechanics?
Define Dynamics?
What is Kinematics?
2.1 Scalars and Vectors
Defination of Scalar.
What is Vector?
How to symbol used for a vector ?
Write graphically mathod to Represent a Vector.
Resultant Vector
Addition of Vectors by Graphical Method
What is head-to-tail rule?
2.2 Rest and Motion
What does motion mean?
2.3 Types of Motion
How many types of motion?
1. Translatory Motion
(i.) Linear Motion
(ii.) Random Motion
(iii.)Circular Motion
2. Rotatory Motion
3. Vibratory Motion
What does motion mean?
2.3 Types of Motion
How many types of motion?
1. Translatory Motion
(i.) Linear Motion
(ii.) Random Motion
(iii.)Circular Motion
2. Rotatory Motion
3. Vibratory Motion
2.4 Distance and Displacement
2.5 Speed and Velocity
instantaneous speed
What is SI unit of velocity?
Uniform and Non-uniform Velocity
2.6 Acceleration
What is deceleration or retardation
Uniform and Non-uniform Acceleration
2.9 Speed-Time Graph
Straight line Graph
Graph line is horizontal
2.10 Gradient of a Speed-Time Graph
2.11 Area Under Speed-Time Graph
Find Area Under Speed-Time Graph by rectangular ?
Find Area Under Speed-Time Graph by Triangle?
Define Physics?
Define Mechanics?
Define Dynamics?
What is Kinematics?
What is Force?
Types of force.
1. Contact Forces
i. What is Friction?
ii. What is Drag?
iii. What is Thrust?
iv. What is Normal force?
v. What is air resistance.
vi. What is Tension force ?
vii. What is Elastic force?
2. Non-contact Force
i. Define Gravitational Force.
ii. Define Electrostatic Force.
iii. Define Magnetic Force.
3.2 Fundamental Forces
1. Gravitational force
2. Electromagnetic force
3. Strong nuclear force
4. Weak neuclearforce
Unification of Weak Nuclear and Electromagnetic Forces
3.3 Forces in a Free- Body Diagram
3.4 Newton law of Motion
3.5 Limitation of Newtons laws of Motion
3.6 Mass and weight
Principle of Conservation
macro-objects
micro-objects



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