Motion Class 9 Science (Physics) One-Shot (Full Chapter Revision) Concepts & MCQs | BYJU's Class 9
In this Byjus Achievers: Early Batch Class 9 & Boards in 45 Days series, Saurabh Sir will do a complete revision on class 9 Science chapter, Motion.
Motion is the change of position and can be defined in terms of the distance moved. Depending on whether the velocity is constant or changing, the motion of an object can be categorised as uniform or non-uniform. In this class, Saurabh Sir will take you through all the important formulas, concepts, graphs, and MCQs to help boost your preparations for the board exams. Some of the topics covered by Sir in this class are motion, distance, displacement, speed, velocity, acceleration, uniform and non-uniform motion, and uniform circular motion. By the end of the class, you will be able to solve any type of questions related to these topics. Further, SIr discusses the distance-time graph, displacement-time graph, and velocity-time graph.
Here’s a homework question for you:
Question: For a uniform circular motion, which of the following is true?
A. Velocity remains constant but speed changes.
B. Both velocity and speed remain constant.
C. Speed remains constant but velocity changes.
D. Both velocity and speed change.
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00:00 Introduction
3:42 Mind Map - Motion
4:49 Distance upon time
5:52 Speed measures
14:57 Shortest Displacement
16:39 Difference between Distance and Displacement
19:24 Velocity - Speed with Direction
27:44 Acceleration Rate of change of velocity
31:31 Types of Motion
31:46 Uniform Motion
32:28 Non-Uniform Motion
33:20 What is Graphs - Distance - Time Graph
40:09 Displacement - Time Graph
40:36 Nature of Slope
41:58 Distance-Time Graph v/s Displacement -Time graph
42:55 Velocity - Time Graph
45:00 Equations of Motion
46:42 Uniform Circular Motion
48:11 Equations to Remember
48:47 Graph of Motion
48:55 Homework Question
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