 ## NCERT Solutions for Class 9 Physics

NCERT Solutions for Class 9 Physics will help you to ace the unsolved problems in the Class 9 Science book prescribed by the NCERT for all the schools of CBSE. A thorough understanding of the NCERT Solutions for Class 9 Physics helps you in understanding Physics concepts to the point. The NCERT Solutions for Class 9 Physics cover all the 5 chapters of the prescribed Physics syllabus and are the best alternative.

NCERT Solutions for Class 9 Physics breaks down the solutions into detailed steps and explains the answer thoroughly, which helps you understand the pattern of questioning and a way to increase your score in exams.

NCERT Solutions for Class 9 Physics are prepared by our team of highly professional, qualified and experienced faculties. These NCERT Solutions for Class 9 Physics helps you to quickly grasp all the basic concepts of physics. In case you have a doubt while you are studying NCERT Solutions for Class 9 Physics, we have a team of teachers who are just a click away to solve your doubt any time.

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### NCERT Solutions for Class 9 Physics Chapterwise

Class 9 Physics Chapter 1 – Motion

Class 9 Physics Chapter 2 – Force And Laws Of Motion

Class 9 Physics Chapter 3 – Gravitation

Class 9 Physics Chapter 4 – Work and Energy

Class 9 Physics Chapter 5 – Sound ### NCERT Solutions for Class 9 Physics Chapter 1 Motion

Here, you will learn about motion including motion along a straight line, types of motion, the difference between Vector & Scalar, Speed & Velocity, Distance & Displacement, Acceleration – Rate of change of velocity and average speed and velocity, Graphical representation of motion and derivation of three equation of motion. Download NCERT Solutions for Motion here.

### NCERT Solutions for Class 9 Physics Chapter 2 Force and Laws of Motion

In this chapter, you will learn the concept of balance and unbalance forces. Starting with the First law of motion, the Galileo’s concept, the law of inertia. You will also learn the Second law of motion and Third law of motion, momentum, rate of change of momentum. And applications on first, second and third laws of motion. Download NCERT Solutions for Force And Laws Of Motion here.

### NCERT Solutions for Class 9 Physics Chapter 3 Gravitation

This chapter gravitation takes you through the depths of motion of objects under the influence of gravitational force on the earth. Gravitational force and Newton’s universal law of gravitation. Download NCERT Solutions for Gravitation here.

### NCERT Solutions for Class 9 Physics Chapter 4 Work and Energy

In this chapter, you will learn about the relationship between work and energy, scientific conception of work and also different forms of energy such as Kinetic energy, Potential energy, application of kinetic and potential energy, and energy of an object at a certain height. Download NCERT Solutions for Work and Energy here.

### NCERT Solutions for Class 9 Physics Chapter 5 Sound

This chapter is a very interesting one as you will get to learn about the Reflection of Sound i.e ECHO, reverberation, and applications of multiple reflections of sound. All these concepts are taught by implementing various activities needed to be done in the Physics laboratory that makes the learning process more effective and interactive. Download NCERT Solutions for Sound here.

### Why choose Toppr?

Solved Questions For You:

Question 1. What is the acceleration of free fall?

Answer: Acceleration of free fall is the acceleration experienced by the freely falling body the effect of gravitation of earth alone. It is also called acceleration due to gravity.

Its value on earth
Question 2: What do we call the gravitational force between the earth and an object?

Answer: The gravitation force between the earth and object is called weight.

It is also equal to the product of acceleration due to gravity and mass of the object.
,
where,  mass of the object,
acceleration due to gravity
Question 3. Why will a sheet of paper fall slower than one that is crumpled into a ball?

Answer: By crumpling the paper into a ball, the volume of the object decreases but the mass remains the same. Hence its density increases.

As air applies some resistance on falling sheet of paper as well as crumpled ball but the resistance to the motion of crumpled ball through the air decreases that makes it to fall faster than the sheet of paper.
Question 4. What is the importance of the universal law of gravitation?

Answer: The Importance of Universal law of gravitation lies in the fact, that it was successful in explaining many phenomena such as.

(i) how different objects  in this universe,  affect  others,
(ii) how  gravity is  responsible for the weight of a body and keeps us on the ground,
(iii) how the lunar motion around the earth occurs
(v) how the planetary motion takes place
(vi) how the tidal waves originate
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