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# NCERT Exemplar Class 11 Physics Chapter 3 Solutions: Motion in a Straight Line

NCERT Exemplar Solutions for Class 11 Physics Chapter 3 illustrates the comparison of objects as a point object. For a better understanding of the chapter, you will be plotting graphs and determining the values according to it. The main topics that come under the NCERT Exemplar Class 11 Science Chapter 3 Motion in a Straight Line are types of motion, velocity and speed, distance and displacement, acceleration and uniform acceleration, Kinematical Graphs, relative velocity, and equations of motion.

CBSE Class 11 NCERT Exemplar Chapter 3 has 5 main exercises with around 26 exemplar problems in total. These solutions comprise well-researched answers to the objective type questions, match the following, state true or false, short answer types questions as well as long questions. The expert Physics teachers at Instasolv have presented the solutions in an easy to understand language to assist you in preparing the chapter in a quick time.

Practising these NCERT Exemplar Problems with Solutions will not only develop a grip on the topics available in Chapter 3 – Motion in a Straight Line but also master the concepts that will help you excel in your CBSE exams. All the questions in the NCERT Exemplar Solutions for Class 11 Physics are solved as per the latest guidelines of CBSE.

## Important Topics for NCERT Physics Exemplar Solutions Class 11 Chapter 3 – Motion in a Straight Line

Motion in a Straight Line

A body is considered to be in motion if it changes its place with respect to time.

Types of Linear Motion

The linear motion can be of two types:

• Non-Uniform linear motion with non-zero acceleration
• Uniform linear motion with zero acceleration

Uniform Motion in a Straight Line

A body is considered to be in a uniform motion if it moves in a straight line covering the same distances in the same intervals of time. A body is considered to have uniform acceleration if the rate of change of its velocity remains continuous. For example, if a car travels at a speed of 60 km/hr then it will cover a distance of 1 km/minute.

Non-uniform Motion in a Straight Line

A body is considered to have a non-uniform motion when the velocity of a body changes by unequal amounts in the same intervals of time. While in movement, the rate of change of its velocity changes at various points of time. For example, a boy hitting out a football. It might cover 4 meters in the first hit, 6 meters in the second hit, 9 meters in the third hit and so on as per the velocity applied by the boy.

Displacement

Displacement is the variation in the place of a body. The magnitude of displacement between similar points is proportional to the path length.

Average Speed

Average speed is considered to be the ratio between the total path length crossed to the time taken.

### Exercise-wise Discussion of NCERT Physics Exemplar Solutions Class 11 Chapter 3 – Motion in a Straight Line

Exercise 3.1 – Multiple Choice Questions I

NCERT Exemplar Problems Class 11 Physics Solutions for Chapter 3 Exercise 3.1 contains a total of 6 questions. These are multiple-choice questions related to the main topics of the chapter including types of motion, velocity and speed, distance and displacement, acceleration and uniform acceleration.

Exercise 3.2 – Multiple Choice Questions II

This exercise consists of a total of 5 questions which are also multiple-choice questions that are based on the concepts of kinematics, graphs, relative velocity, and equations of motion.

Exercise 3.3 – Very Short Answer Types Questions

In this exercise of Chapter 3 – Motion in a Straight Line there are a total of 5 questions which are very short answer type questions. Practising these questions will help you understand the difference between the total length of the path enclosed by an element and level of displacement in a similar interval of time.

Exercise 3.4 – Short Answer Type Questions

Exercise 3.4 consists of short answer type questions. There are a total of 6 questions based on the concept of kinematic equations for uniformly accelerated motion and relative velocity.

Exercise 3.5 – Long Answer Type Questions

This is the last exercise of the chapter and there are a total of 4 questions in total. Practice these questions well to understand the concepts better.

## Why Use NCERT Physics Exemplar Solutions Class 11 Chapter 3 – Motion in a Straight Line by Instasolv?

• At Instasolv, we have provided NCERT Exemplar Problems and Solutions for Class 11 Physics to help you learn the topics more effectively.
• Referring to our solutions, you will understand the basic concepts of physics by solving questions for getting clarity.
• Our NCERT Exemplar Class 11 for Physics Problems and Solutions can be accessed anytime and can be followed easily.