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Work and Energy 1 Class 9 Science
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➡️Watch the entire playlist for Class 9 Science Work Power Energy: • Work and Energy | Class 9 Science • Work is the product of force and displacement. A force is said to do positive work if the force has a component in the direction of the displacement of the point of application. energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. In this video, we will cover: • 1. Work Energy: Definitions of day-to-day life • 2. Scientific Definition of Work • 3. Work Examples • 4. Work done by a constant force • 5. Work: Units • 6. Work Done = 0 : Examples • 7. Positive Negative Work • 8. Problem 1:- Certain force acting on a 20 kg mass changes its velocity from 5 ms-1 to 2 ms-1. Calculate the work done by the force. • 9. NCERT solutions on chapter work and energy • 10. Numerical to find force • 11. A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal, what is the work done on the object by the gravitational force? Explain your solution • 12. Energy • 13. Forms of Energy • 14. Kinetic Energy • 15. Kinetic Energy: Examples • 16. Derivation of K.E. = (1/2) mv2 • 17. Kinetic Energy: Applications in real life • 18. Potential Energy • 19. Potential Energy: Examples • 20. Derive P.E.= mgh • 21. Chapter 11 Class 9 Science • work and energy class 9,work and energy,work and energy physics,work and energy physics problems,class 9 science work and energy,class 9 science work energy and power,work energy theorem,potential energy,law of conservation of energy,work energy and power,work energy and power class 9 ncert,total energy,roshni mam,exam fear work energy power,examfear class 9 physics work and energy,class 9 science chapter 11 work and energy,chapter 11 science class 9 • LearnoHub.com (formerly called ExamFear Education) is a Free Education platform with more than 6000 videos on Physics, Chemistry, Maths, Biology, English, Science experiments, tips tricks and motivational videos for Classes 6 to 12. • Learn for Free! • ➡️ Website: http://www.learnohub.com • ➡️ Facebook: https://bit.ly/LearnoHubFB • ➡️ Instagram: https://bit.ly/LearnoHubInsta • ➡️ Get Our Videos in Pendrives: Class 9 - https://bit.ly/LHPenDrive9 • About the Teacher: • Roshni Mukherjee, the Founder-Educator at LearnoHub has been building this free learning platform since 2011. She has been recognised as one of the 100 Women Achievers of India by the Ministry of Women Child Development and felicitated by the President of India in 2016. Roshni has been invited by Google to speak at Global Education Symposium 2017 held at Google Headquarters, California. Limca Book of Records also recognised our work. • ➡️Watch Roshni's Tedx Talk to know more about her journey: • The magic passion can create | Roshni... • #LearnoHubScience #CBSEClass9Science #SabkoSamajhAayega • Join us and let us together build this Free Learning Platform! • We will surely ensure that you enjoy the real learning with us. • Copyright © All rights reserved. LearnoHub | ExamFear Education
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