Work energy & Power Assignment |DPP 5 Class 11 Physics

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Q-1.Can work be done without energy?

No work can be done without energy.
To do a certain amount of work you need a certain amount of energy.
According to second law of thermodynamics energy can neither be created nor destroyed.

Q-2 Is work done equal to energy?

Relation between work & energy is direct.
Difference in K. E of an object is work done by object.

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