NCERT Solutions for Class 11 Physics Chapter 3

NCERT Solutions for Class 11 Physics Chapter 3 Motion in a Straight Line

Every aspect of our life is actually governed by a physical law or concept. Physics has explanations of everything from the beginning of the universe to life that is possible today. Students in class 11 are introduced to some fundamental concepts of physics and laws.

A change in the position of an object is referred to as motion. This change also occurs in relation to the object’s surroundings. Everything in the Universe is in motion. Chapter 3 Physics Class 11, in particular, is a part of kinetics. This section of the chapter contains information about rectilinear motion, reference point and frame of reference. In addition, the chapter discusses acceleration, average velocity, instantaneous velocity, and speed.

To aid students with understanding Chapter 3 better, Extramarks offers NCERT Solutions for Class 11 Physics Chapter 3 – Motion in a Straight Line. Students can download these solutions for free from the website and prepare better for the exams.

 

NCERT Solutions for Class 11 Physics Chapter 3

Kinetics is introduced in this section. The topics including Rectilinear Motion, Reference Points, Path Lengths, Relative Velocity, Acceleration, and other intriguing concepts are discussed in Chapter 3 of NCERT Class 11 Physics. 

It is necessary for you to be familiar with the topics and sub-topics of Chapter 3 Physics Class 11 before you begin your Class 11 Physics preparation. Here’s a complete list of the topics covered in Chapter 3:

 

Section Number Title Name
3 Motion in a Straight Line
3.1 Introduction
3.2 Position, Path Length and Displacement
3.3 Average Velocity and Average Speed
3.4 Instantaneous Velocity and Speed
3.5 Acceleration
3.6 Kinematic Equations for Uniformly Accelerated Motion
3.7 Relative Velocity

 

3.1 Introduction 

This section provides a general overview of the subject. The sub-topics include:

3.2 Path length, position, and displacement 

This subunit looks at three different aspects of motion. These aspects are, in particular, position, path length, and displacement.

3.3 Average velocity and average speed 

Differences in displacement are caused by average velocity divided by time intervals. Furthermore, it is during these time intervals that the displacement occurs. Average speed, on the other hand, describes the rate of motion along the actual path.

3.4 Instantaneous velocity and speed 

As the time interval gets infinitely small, the velocity of an instant is the limit of the average velocity. This contrasts sharply with instantaneous speed. The magnitude of velocity is referred to as instantaneous speed.

3.5 Acceleration 

This is the rate at which an object’s velocity changes with respect to time.

3.6 Equations of motion for uniformly accelerated motion

This section covers the various aspects of motion through simple equations. 

3.7 Relative velocity 

Relative velocity is the velocity at which one object moves with respect to the other.

The topics covered in NCERT Solutions Class 11 Physics Chapter 3 are important for students in Class 11 because they lay the groundwork for concepts that will be discussed in Class 12 and higher-level studies. Understanding fundamental topics like the one covered in this chapter is essential for understanding advanced physics concepts.

Class 11 Physics Chapter 3 NCERT Solutions assist students in learning more effectively and comprehending the fundamental concepts of physics. 

Access NCERT Solutions for Class 11 Physics Chapter 3 – Motion in a Straight Line

NCERT Solutions for Class 11 Physics Chapter 3 Download

Motion is a topic that gets a lot of attention. It is necessary in every field of science. In addition, the chapter is critical for automobile manufacturers. This is due to the importance of acceleration, speed, and velocity in automobiles. Engineers also frequently employ motion-related concepts.

After finishing the chapter, you should be able to answer the questions about Motion in a Straight Line. You’ll also understand how to use the distance-time graph to solve problems involving the speed and velocity of objects at various points in time. Students will benefit from NCERT Solutions Class 11 Physics Chapter 3 as they work through the NCERT questions.

This chapter is heavily reliant on numerical and derivative questions. Derivations should be practised multiple times to ensure that all concepts are understood. Not only is NCERT Chapter 11 Motion in a Straight Line important for getting good grades in school, but questions from this chapter are also asked in JEE Main, AIIMS, BITSAT, and NEET entrance exams.

NCERT Chapter 3 Marks Distribution 

The maximum number of questions from this chapter is two, and the total number of marks you can score in this chapter in your final term examination is five.

Benefits of Solving CBSE Class 11 Physics Chapter 3

Students can use the NCERT Solutions for Class 11 Physics Chapter 3 to get simple, step-by-step answers to the questions in the textbook. The answers are useful in understanding how to answer questions in the first term exams. Students can save time and speed up their revision, which is ideal for preparing for the term I exam. Here are some benefits of studying Chapter 3 of Class 11 Physics:

Understanding the World

Studying physics can be personally rewarding as students begin to comprehend everyday objects in terms of the concepts that underpin them. Physicists have been able to explain how the world works, all the way back to the beginning of time. Research findings can be used to develop new technology.

Bringing Other Disciplines Together

Physics is not a self-contained discipline. It is used in a wide range of fields. Medical students, for example, must understand basic physics concepts such as pressure, the velocity of flow, and changes in resistance to flow in order to understand how blood and air flow in the body. 

Develop Problem-Solving Skills

An individual’s ability to think outside the box and apply a variety of approaches to solve a problem is highly valued in Science. Having and honing problem-solving skills is beneficial not only for your studies but also to your job search once you’ve completed your degree. A degree in Physics is an excellent way to develop strong analytical skills, which are highly valued by many employers.

Technological Advancement

The value of Physics can be seen in the advancement of cutting-edge technologies. Technology advancements are frequently based on physics discoveries and inventions based on a new interpretation of existing knowledge of Physics, demonstrating the importance of this branch of Science.

Keeps you alert

Another appealing aspect of learning about physics is that this field is always changing. It means that studying the subject should never be boring, as old, established theories are challenged and replaced with newer, more dynamic theories.

NCERT Solutions ensure good grades in both school and competitive exams by focusing on each subject in depth. CBSE Class 12 examinations are among the most important stages in a student’s life, and as the exams approach, students become increasingly concerned about performing well. Starting early, staying consistent, and finishing well are the keys to success. Students can save time by having access to up-to-date material in one location. 

When you prepare for Class 11 using the NCERT solutions Class 11, you gain access to study materials that have been compiled after extensive research. They have been compiled by expert faculty members and, as such, can assist you in strategising your studies in order to achieve good results in your CBSE Class 12 examination. Regular practise and sheer determination are required to achieve the desired results.

FAQs (Frequently Asked Questions)

Displacement has a directional component, whereas distance does not. Although the magnitude of displacement can be positive or negative, distance is always positive. It doesn’t get any smaller over time.

Motion can be classified as follows: 

  1. a) One-dimensional motion occurs when a particle moves in a straight line or along a path. For example, a train moving in a straight line, a freely falling body under gravity, and so on.
  2. b) A particle moving in a plane is said to be moving in two dimensions—for example, the motion of a gun shell, carrom board coins, and so on.
  3. c) Three-dimensional motion refers to the movement of a particle in space. The motion of a kite in the sky, the motion of an aeroplane, and so on.

You can understand the pattern of the question and analyse the trend of the questions asked by looking at past years’ questions. These papers will help you determine the topics that are worth spending more time and effort on. They will also show you the topics that require appropriate notes. Exam question papers from previous years will help you focus your preparation and feel more prepared and confident on exam day. Students can cross-check their answers to these questions with the Class 11 Physics Chapter 3 NCERT Solutions. On the Extramarks website, you can get all of these resources for free.

The total path length covered by the object is divided by the total time taken to calculate speed. The change in position divided by time intervals is called velocity. A scalar quantity is speed. However, velocity is a vector quantity. Speed is always positive. Velocity, on the other hand, can be positive, negative, or zero depending on the situation. Speed is the rate at which an object moves over time; speed is the rate at which an object moves. The rate and direction of an object’s movement are referred to as velocity.

Motion in a Straight Line is a fundamental yet important chapter in Class 11 Physics. This chapter can be used to generate a plethora of questions. Start by getting familiar with the fundamental terms or definitions of motion, acceleration, speed, velocity, and relative velocity. Understand the various scalar and vector quantities. Practise drawing the distance-time graph to solve various problems.

Chapter 3 Physics Class 11 examines motion and the various types of motion. We study concepts such as path lengths and displacement. We also learn about velocity and speed, as well as the various numerical values that go with them. The following pointers can be made about the chapter:

  • The chapter contains a number of graphs and formulae that explain motion and displacement. 
  • The chapter also covers instantaneous velocity and speed, as well as their numerical derivations. 
  • These numerical values are also represented graphically. 
  • The chapter includes a variety of in-text examples as well as questions for students to answer 
  • The chapter explains how velocity and speed are related 
  • The chapter provides two methods for solving these equations for students to choose from 
  • The chapter concludes with a brief discussion of relative velocity and its formulae 

The chapters that get more weightage are – NCERT Chapter 3 Motion in a Straight Line, Chapter 4 Motion in a Plane, and Chapter 7 System of Particles and Rotational Motion from Part I, and Chapter 12 Thermodynamics, Chapter 13 Oscillations, and Chapter 14 Waves from Part II.