Class 11 Physics — Chapter 3: MOTION IN A PLANE

What you'll learn

• ▸Scalars and Vectors
• ▸Position and Displacement Vectors
• ▸Multiplication of a Vector by a Scalar
• ▸Vector Addition - Graphical Method
• ▸Vector Subtraction - Graphical Method
• ▸Properties of Vectors and Vector Addition

Chapter Summary

--- PAGE 1 --- CHAPTER THREE MOTION IN A PLANE 3.1 Introduction 3.2 Scalars and vectors 3.3 Multiplication of vectors by real numbers 3.4 Addition and subtraction of vectors — graphical method 3.5 Resolution of vectors 3.6 Vector addition — analytical method 3.7 Motion in a plane 3.8 Motion in a plane with constant acceleration 3.9 Projectile motion 3.10 Uniform circular motion Summary Points to ponder Exercises 3.1 INTRODUCTION In the last chapter we developed the concepts of position, displacement, velocity and acceleration that are needed to describe the motion of an object along a straight line. We found that the directional aspect of these quantities can be taken care of by + and – signs, as in one dimension only two directions are possible. But in order to describe motion of an object in two dimensions (a plane) or three dimensions (space), we need to use vectors to describe the above- mentioned physical quantities. Therefore, it is first necessary …

Practice Questions from this Chapter

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1. Explain projectile motion simply. Get Solution →
2. Visualize vector addition graphically. Get Solution →
3. Identify daily examples of circular motion. Get Solution →
4. According to the text, what is a scalar quantity? Get Solution →
5. Which of the following is given in the text as an example of a vector quantity? Get Solution →
6. Two vectors are considered equal if, and only if, they have the same what? Get Solution →
7. What happens when a vector A is multiplied by a positive real number λ? Get Solution →
8. How is the vector subtraction A – B defined in terms of vector addition? Get Solution →

Did you know?

• 💡 Vectors help pilots calculate flight paths considering wind direction.
• 💡 The concept of vectors dates back to the 17th century with force studies.
• 💡 Earth's orbital speed around the Sun is approximately 30 kilometers per second.
• 💡 A cannonball and a dropped feather hit the ground simultaneously in a vacuum.
• 💡 The Moon is constantly falling towards Earth, creating its orbit.

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