Science for Ninth Class Part 1 Physics

Science for Ninth Class Part 1 Physics
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Science for Ninth Class Part 1 Physics

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Publisher: SChand Publications
ISBN: 9789352530250
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publisher do not give any representation or warranty with respect to the accuracy or completeness of the contents of this publication and are selling this publication on the condition and understanding that they shall not be made liable in any manner whatsoever. The publisher and the authors expressly disclaim all and any liability responsibility to any person, whether a purchaser or reader of this publication or not, in respect of anything and everything forming part of the contents of this publication. The publisher and authors shall not be responsible for any errors, omissions or damages arising out of the use of the information contained in this publication. Further, the appearance of the personal name, location, place and incidence, if any in the illustrations used herein is purely coincidental and work of imagination. Thus the same should in no manner be termed as defamatory to any individual.
CONTENTS FIRST TERM 1. MOTION
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Movement of a Body or Object is Called Motion Distance Travelled and Displacement Uniform Motion and Non-Uniform Motion Speed Average Speed and Uniform Speed or Constant Speed Numericals on Speed Velocity Uniform Velocity or Constant Velocity Speed and Velocity are Not Always Equal in Magnitude Numericals on Velocity Acceleration Uniform Acceleration and Non-Uniform Acceleration Retardation Deceleration or Negative Acceleration Average Velocity Equations of Uniformly Accelerated Motion First Equation of Motion, Second Equation of Motion and Third Equation of Motion Numericals on Uniformly Accelerated Motion Graphical Representation of Motion Distance - Time Graphs and Speed-Time Graphs or Velocity - Time Graphs Speed - Time Graph When Speed Remains Constant Speed Time Graph When Speed Changes at a Uniform Rate Uniform Acceleration Speed - Time Graph When the Initial Speed of the Body is Not Zero Speed - Time Graph When Speed Changes at a Non-Uniform Rate Non-Uniform Acceleration Numericals Based on Graphs To Derive the Equations of Motion by Graphical Method Uniform Circular Motion Examples of Uniform Circular Motion Motion of Satellites Around the Earth, Motion of Earth Around the Sun, Motion of Athlete on Circular Track and Motion of Seconds Hand of a Watch on Dial To Calculate the Speed of a Body Moving in Uniform Circular Motion
2. FORCE AND LAWS OF MOTION A Push or Pull on a Body is Called Force Effects of Force A Force Can Move a Stationary Body, A Force Can Stop a Moving Body, A Force Can Change the Speed of a Moving Body, A Force Can Change the Direction of a Moving Body and a Force Can Change the Shape and Size of a Body Balanced Forces and Unbalanced Forces Newton s Laws of Motion Newton s First Law of Motion and Inertia of Bodies or Objects
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Momentum A Measure of the Quantity of Motion Possessed by a Moving Body Momentum Depends on Mass and Velocity of a Moving Body Numericals Based on Momentum Newton s Second Law of Motion Applications of Newton s Second Law of Motion Catching a Cricket Ball, The Case of a High Jumper and the Use of Seat Belts in Cars Numericals