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प्रश्न
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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उत्तर
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.
संबंधित प्रश्न
Derive a relationship between S.I. and C.C.S. unit of work
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
What are the quantities on which the amount of work done depends? How are they related to work?
Its moment of a force scalar or a vector quantity?
Give an example
Electrical energy changes to heat energy.
State whether work is done or not, by writing yes or no, in the following case:
A man pushes a wall.
