Define kinetic energy? Write an expression for kinetic energy? Write the SI unit of kinetic energy?
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Kinetic Energy
- Kinetic energy is a energy possessed by a body due to its state of motion .
- Kinetic energy is usually denoted by the symbol K.
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Example of kinetic energy
A fast moving ball has Capital city to break a window fan on writing it because it has kinetic energy .
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Expression of kinetic energy
The kinetic energy by a body is equal to the amount of work with the moving body can do before coming to rest.
Method of calculation of kinetic energy
It can be calculated by finding the amount of work needed to done by an opposite force to stop the body .
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kinetic energy of body = work done by the retarding force F in displacement as before stopping it .
At the last we get the formula:-
K =1 / 2 m v²
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