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Science chapter motion notes in very simple way | pdf or web view | S. Chand

Let's take close look to basic and importantconcepts of chapter motion for class 9th Science. 


Science chapter motion notes in very simple way | pdf or web view | S. Chand


What is Motion?


A body is said to be in motion when it’s position is changes continuously with respect to a stationery object taken as a reference point. 


What is Distance? 


The actual path covered by a moving body is called Distance that is travelled by a body. It is  a scalar quantity.


What is displacement? 


The shortest distance between the initial and final position is called displacement. It is a vector quantity. 


What is Uniform motion?

A body has a uniform motion when it travels equal distance in intervals of time.


What is Non-Uniform motion? 

A body has a non-uniform motion when it travels unequal distance in intervals of time. 


What is speed?

Distance travelled by a body per unit time is called speed. 


What is Velocity?

Displacement produced by a body per unit time is called Velocity. 


What is Acceleration? 

Change in Velocity(final velocity – initial velocity) upon change in time is called acceleration. 


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Equation of uniformly accelerated motion:-


1.First equation of Motion

The first equation of Motion is as follow :


V = u + at


In the above equation u Is initial velocity, V is final velocity, a is Acceleration and t is time. This is usually used to find the final velocity when distance is not given but acceleration, initial velocity and time.


2.Second equation of Motion

The second equation of Motion is as follow :


S = ut + ½ × at²

In the above equation, S is Distance,  u Is initial velocity, a is Acceleration and t is time. 

This equation is used to find the distance when final velocity is not given.


Chapterwise Last Years Solved Papers: CBSE Class 10 for 2021 Examination

3.Third equation of Motion 

The equation of Motion is as follow :

v² = u² + 2as

In the above equation, s is Distance,  u Is initial velocity, V is final velocity, a is Acceleration and t is time. This usually help us to find finally velocity when time is given. 



 Get PDF : 

https://drive.google.com/file/d/15yK045oBKxvdB9OaTSjPSzgzHZ7hDTq5/view?usp=drivesdk

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