Скачать или смотреть Work, Power & Energy Class 9 | One Shot in 15 Minutes | CBSE NCERT Revision

Work, Power & Energy complete chapter in just 15 minutes! Perfect last‑minute one-shot revision with derivations, formulas, and exam-focused numericals.

What you’ll learn:

Work: W = F·s, angle of force (cos θ), positive/negative/zero work, SI units (Joule)
Energy: Kinetic energy derivation (v² – u² → KE = 1/2 mv²), Potential energy (mgh), forms of energy, law of conservation of energy
Work–Energy Theorem and its applications
Power: P = W/t, average vs instantaneous power, units (Watt), commercial unit (kWh)
Important formulas, quick tips, and common mistakes to avoid
NCERT-style numericals and exam patterns for unit/periodic tests
Why this video?

Full chapter in 15 minutes for quick revision
Covers derivations + examples to boost concept clarity
Aligned with NCERT Class 9 CBSE syllabus
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