Study Chapter Details
UP Board Class 9 Science Book – Work and Energy
The “Work and Energy” chapter from the UP Board Class 9 Science Book explains how physical activities like lifting, pushing, and moving objects involve the transfer of energy through work. Based on the latest NCERT syllabus, this chapter helps students understand the scientific meaning of work, energy, and their interrelationship.
Students learn how to calculate work done (W = F × s) and explore different forms of energy such as kinetic energy and potential energy. The chapter also covers the Work-Energy Theorem, which states that the work done on an object is equal to the change in its kinetic energy.
Further, it explains the law of conservation of energy, showing how energy can change from one form to another but can never be created or destroyed. Real-life examples — like a moving car, a stretched bow, or falling objects — make the concepts relatable and easier to understand.
The UP Board Class 9 Science Book – Work and Energy provides clear explanations, formulas, and numerical problems that strengthen physics fundamentals and help students perform well in exams.
