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Formula Sheet

Work, Energy, and Simple Machines

CBSE · Class 9 · Science

All formulas from Work, Energy, and Simple Machines in CBSE Class 9 Science. Key equations, constants, and identities for board exam preparation.

80 questions80 flashcards5 concepts

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A line graph showing distance on the Y-axis and time on the X-axis, depicting a straight line passing through the origin, representing uniform speed. Includes labels for calculating speed from the slo
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7 Formulas · 3 Sections

Formulas

1) Work

W = F × s

1 J = 1 N × 1 m = 1 kg m^2 s^-2

Work done by a constant force = force applied × displacement in the direction of the force

2) Energy and Work-Energy Theorem

Work done on an object = change in its energy

1 J = 1 kg m^2 s^-2

4) Kinetic Energy

K = (1/2)mv^2

W = (1/2)m(v^2 - u^2)

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Frequently Asked Questions

What are the important topics in Work, Energy, and Simple Machines for CBSE Class 9 Science?
Key topics in Work, Energy, and Simple Machines include Distance vs Displacement: The Correct Decision Path, Motion - Complete Chapter Concept Overview, Chapter 7 Motion – Complete Concept Map. These are the concepts CBSE Class 9 examiners draw on most — study them first, then practise related questions.
How to score full marks in Work, Energy, and Simple Machines — CBSE Class 9 Science?
Understand the core concepts first, then work through the 80 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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