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Question
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
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Solution
Energy is defined as the capacity of a body to do work. Energy is a scalar quantity. The energy possessed by a body is measured by the amount of work done by a body while changing its state of rest or state of motion.
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| S. No | Activity | Work done or not done |
| 1. | Pushing the door | |
| 2. | Holding a doll | |
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