# Class 11 Physics Chapter 4 NCERT Solutions for Motion in a Plane (Updated for 2021-22)

NCERT Solutions for Class 11 Physics Chapter 4: The chapter, ‘Motion in a Plane,’ is vital for CBSE class 11. It is also one of the concepts where you can score high marks in the examinations. So, NCERT provides solutions for the same so that students can be thorough with the chapter. The solutions also have questions that the students must solve. The experts of NCERT solutions have carefully handpicked those questions that have appeared hundreds of times in the examinations. So, by going over them, you can be thorough with the concepts.

## NCERT Solutions for Class 11 Physics Chapter 4 Motion in a Plane

Class 11 Physics NCERT Solutions For Chapter 4

NCERT chapter-wise solutions are available as PDF. You can download them from various websites authorized to host them. Besides exercise questions, NCERT also provides other types of questions along with their solutions. Such questions not only help students to score well in their 11th-grade final exams but also in their 12th-grade board examinations as well as in the various entrance exams that follow.

The questions mostly cover concepts like vector and scalar quantities and their relationship with speed and displacement.

You can download CBSE NCERT Solutions for Class 11 Physics Chapter 4 Motion in a Plane from below.

## What will you learn in CBSE Class 11 Physics Chapter 4 Motion in a Plane?

The chapter consists of around 12 sections, including the ‘Introduction’ and explains concepts related to motion in a plane. It focuses on scalar and vector quantities that are used to determine other quantities like displacement and acceleration.

In the ‘Introduction’ section, students will learn about velocity, position, acceleration, and displacement. These are core concepts used to explain motion in a plane. You can also use them to find solutions to various problems that later appear in the chapter.

The second section of the chapter talks about ‘Scalar’ and ‘Vector’ quantities. Scalar and Vector quantities are the cruces of the chapter as they come in handy for learning other concepts.

In the following sections, you will be learning about the application of vector quantities to find the speed and displacement of an object that moves along a plane. By going over them, you will know how to add, subtract, and multiply vector quantities. You will also know the formulae used in these operations as well as their applications in problems. Apart from this, you will also be learning about the derivation of equations related to vector quantities.

Similarly, other concepts in the chapter include relative velocity in two dimensions, projectile motion and uniform circular motion.

Motion in a Plane is a central concept in Physics that enables you to score higher in the exams. But to do so, you must get enough practice.

But before you do that, there are certain formulae and theorems you should know. The section below gives all the necessary formulae you should be using to solve problems. So, make sure you go through and thoroughly understand them before you head over to the numerical questions.

### Important Concepts of NCERT Solutions for Class 11 Physics Chapter 4

4.1 INTRODUCTION

4.2 SCALARS AND VECTORS

4.2.1 Position and Displacement Vectors

4.2.2 Equality of Vectors

4.3 MULTIPLICATION OF VECTORS BY REAL NUMBERS

4.4 ADDITION AND SUBTRACTION OF VECTORS — GRAPHICAL METHOD

4.5 RESOLUTION OF VECTORS

4.6 VECTOR ADDITION – ANALYTICAL METHOD

4.7 MOTION IN A PLANE

4.7.1 Position Vector and Displacement

4.8 MOTION IN A PLANE WITH CONSTANT ACCELERATION

4.9 RELATIVE VELOCITY IN TWO DIMENSIONS

4.10 PROJECTILE MOTION

4.11 UNIFORM CIRCULAR MOTION

## Important Formulae and Theorems

The chapter consists of various formulae that can be helpful when solving numerical problems. Among them, the formulae for determining the average velocity and speed are of the utmost prominence, which you can find below.

Average Velocity = Net Displacement / Total Time.

We also have,

Average Speed = Total Path Length / Total Time

Motion in a Plane, the fourth chapter in Physics for students of CBSE class 11, explains various concepts related to multi-dimensional motion, but mostly two-dimensions. The designers of these solutions are subject matter experts. They logically present each answer, making it easier for the students to understand them.

We have covered the complete guide on CBSE NCERT Solutions for Class 11 Physics Chapter 4 Motion in a Plane. Feel free to ask us any questions in the comment section below.

### What types of questions may be covered in NCERT Solutions for Class 11 Physics Chapter 4?

NCERT Solutions for Class 11 Physics Chapter 4 Motion in a Plane has the following types of questions:
1. Reasoning questions