Question

Define energy?
Class 9
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Answer 1

Answer:

The energy may be defined as the capacity of a body to do work. – The SI unit of energy is joule (J). or 1 kJ = 1000 J. Forms of energy :

Explanation:

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Answer 2

Answer:

the capacity to do work; the influence required to perform an action. The amount of energy in a system is the amount of change that can be made to it. Basic forms of energy include: Kinetic energy - energy of an object in motion, which acts as the capacity to undergo change in position over time.