Chapter 17 of 30

Updated 6 August 2026

Concept Maps

Work, Energy and Power — Concept Maps

Q: What are the important topics in Work, Energy and Power for ICSE Class 11 Physics?

Key topics in Work, Energy and Power include Work and Its Sign, Work Done by Variable Force, Units, Dimensions, and Power, Kinetic Energy and Work-Energy Theorem. Study these first, then practise questions on each for Class 11 exams.

Q: What do the concept maps for Work, Energy and Power show?

The 4 maps show how the ideas in Work, Energy and Power connect: Work, Energy and Power - Concept Hierarchy; Work, Energy and Power - Complete Concept Map. Each map is also written out as an outline on this page.

Q: How should I revise Work, Energy and Power for Class 11 exams?

Learn the core ideas first, then work through the 44 practice questions on Work, Energy and Power. Revise definitions regularly and use flashcards for quick recall before the exam.

ICSE · Class 11 · Physics

4 concept maps of Work, Energy and Power for ICSE Class 11 Physics, each also written out as a text outline. Part of the ICSE Class 11 Physics syllabus.

44 questions40 flashcards16 formulas & key relations5 concepts

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Graphs showing the variation of kinetic energy, potential energy, and total energy with respect to both displacement and time for a particle executing Simple Harmonic Motion. — Learn better with visuals Super Tutor pairs illustrations like this with notes and quizzes for Work, Energy and Power.

4 Concept Maps

Work, Energy and Power - Concept Hierarchy

The map in words

Work Energy Power
- Work
  - Constant Force
    - W = F·s·cos θ
    - Positive Work
    - Negative Work
    - Zero Work
  - Variable Force
    - Integration Method
    - Graphical Method
    - Spring Examples
  - Conservative Forces
    - Path Independent
    - Gravity
    - Elastic Force
  - Non-Conservative
    - Path Dependent
    - Friction
    - Air Resistance
- Energy
  - Kinetic Energy
    - K = ½mv²
    - Motion Based
    - Velocity Dependent
  - Potential Energy
    - Gravitational PE
      - U = mgh
    - Elastic PE
      - U = ½kx²
    - Position Based
  - Conservation
    - Mechanical Energy
    - K + U = constant
    - Energy Transformation
- Power
  - Definition
    - Rate of Work
    - P = W/t
    - P = F·v
  - Units
    - W
    - Joule/second
    - Horsepower
  - Applications
    - Motors
    - Lifting
    - Vehicles
- Collisions
  - Elastic
    - e = 1
    - KE conserved
    - Momentum conserved
  - Inelastic
    - 0 < e < 1
    - KE lost
    - Momentum conserved
  - Perfectly Inelastic
    - e = 0
    - Objects stick
    - Maximum KE loss

Work, Energy and Power - Complete Concept Map

The map in words

Work, Energy and Power
- Work
  - Constant Force
    - W equals F dot s
    - Units Joules
  - Variable Force
    - Integration Method
    - Area under F-x curve
  - Positive Negative Zero
    - Force direction
    - Displacement direction
- Energy
  - Kinetic Energy
    - K equals half mv squared
    - Depends on velocity
    - Work-Energy Theorem
  - Potential Energy
    - Gravitational PE
      - U equals mgh
    - Elastic PE
      - U equals half kx squared
      - Springs and Deformation
  - Conservation
    - Mechanical Energy
      - E equals K plus U
      - Conservative Fields
    - Total Energy
      - Includes Heat and Internal
      - Non-conservative Losses
- Forces
  - Conservative Forces
    - Gravity Electrostatic Springs
    - Path Independent Work
    - PE can be Defined
  - Non-conservative Forces
    - Friction Air Resistance
    - Path Dependent Work
    - Energy Dissipation
- Power
  - Definition
    - P equals W divided by t
    - Rate of Energy Transfer
  - Formula
    - P equals F dot v
    - Watts Units
  - Applications
    - Motor Rating
    - Appliance Power
    - Athlete Capability
- Collisions
  - Elastic Collisions
    - e equals 1
    - Both K and p conserved
    - Momentum Exchanged
  - Inelastic Collisions
    - 0 less than e less than 1
    - Only p conserved
    - Energy Lost to Heat
  - Perfectly Inelastic
    - e equals 0
    - Bodies Stick Together
    - Maximum Energy Loss
  - Coefficient of Restitution
    - e formula
    - Elasticity Measure
    - Velocity Relationships