Category Archives: Class 9

Class 9 articles

Download Class 9 Physics formulas and summary pdf

This article is about CBSE Class 9 Physics formulas and summary pdf. Having all the formula in one place is always helpful for the students, Keeping that in mind,We have prepared a physics formula pdf for CBSE Class 10 students.  This physics formula  and summary pdf contains the physics formula and sumamry that are aimed for class 10 students as per the NCERT physics book … Continue reading Download Class 9 Physics formulas and summary pdf »

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Use of units in physics

Introduction about physics and studying the subject This article is mainly about use of units in physics. But before going further let us first discuss about how to avoid problems that students face while studying physics. When you study physics you must have appropriate skills or you would have to struggle a lot while studying the subject. In my experience students fail to learn physics … Continue reading Use of units in physics »

NCERT Motion Class 9 Solution

ncert class 9 motion solution

Here are few problem solution for NCERT Motion class 9 solution. each solution is detailed enough to clear all the doubt I  have given them some short and some long type questions Short question: Question   1: When will you say a body is in (i) uniform acceleration? (ii) non- uniform acceleration? Solution: Uniform Acceleration: A body is said to have uniform acceleration if it travels … Continue reading NCERT Motion Class 9 Solution »

Newton’s Third Law of motion (action-reaction and examples)

This article is about in-depth explanation of newton’s third law of motion. Here in this article I presume that you have a introduction of Newtons first law of motion and Newton’s second law of motion. Now Newtons first law and second law of motion deals with the effect of forces when they acts on a body. First law is about the change in the velocity of the body on the application of unbalanced forces and second law is gives the exact amount of the force needed to produce a given acceleration.

NCERT book Solutions class-9 Gravitation (Part 2)

This page contains NCERT book Solutions class -9 Gravitation starting from page 143 at the end of the chapter. I have also been writing the notes for this chapter to learn more about notes you can follow this link and to get the in-text questions solution please follow this link . If you want to get the solutions of first 11 questions follow this link.
For assignment on gravitation follow this link

Question 12
Gravitational force on the surface of the moon is only 1/6 as strong as gravitational force on the earth. What is the weight in newtons of a 10 kg object on the moon and on the earth?

How to solve Motion Problems of 9th Class

The Motion problem in Class 9 are limited to Straight line motion with either no acceleration or constant acceleration.

This article is given to give the feel of the whole chapters plus the type of questions and ways to tackle them.

This is quite beneficial for anybody studying Motion for class 9.

Complete Study material has been provided at the below link Study Material

First we need to remember these important terms

NCERT book Solutions class-9 Gravitation (Part 1)

This page contains NCERT book Solutions class -9 Gravitation starting from page 143 at the end of the chapter. I have also been writing the notes for this chapter to learn more about notes you can follow this link and to get the in-text questions solution please follow this link

Question 1

How does the force of gravitation between two objects change when the distance between them is reduced to half ?

Answer

According to Universal Law of gravitation , the gravitational force of attrection between any two objects of mass