Energy, Work, and Power
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Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Energy can neither be created nor destroyed, only transformed from one form to another.
- Work is defined as the product of force and displacement in the direction of the force.
- Power is the rate at which work is done or energy is transferred.
- Efficiency measures how effectively a system converts energy input into useful output.
Key Concepts
- -- Energy
- The capacity to do work or cause change; exists in various forms including kinetic, potential, thermal, chemical, electrical, nuclear, light, and sound energy.
- -- Work
- The process of energy transfer that occurs when an object is moved by an external force in the direction of the force.
- -- Power
- The rate at which work is performed or energy is transferred, measured in watts.
- -- Efficiency
- The ratio of useful energy output to total energy input, often expressed as a percentage.
- -- Mechanical Advantage
- A measure of the force amplification achieved by using a tool, mechanical device, or machine.
Additional Learning Materials
Supplementary resources to enhance your learning experience.