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is the highest and the potential energy is zero. Between these two extreme points,
we see that the system possesses both kinetic and potential energy, the sum of
which is constant. These observations tell us a lot about the conservation of
mechanical energy.
Power
The rate of doing work is defined as power (P).
Power= work/time
Unit of power
S.I unit of Power is Joule per second or J/s.
1 watt is the power when 1J of work is done in 1s.
Units of Power
The bigger unit of power is Kilowatt and represented by kW.
1kW = 1000W
Some another units to measure power are:
6
1 Megawatt = 10 watt
1 horse power = 746 watt
Commercial unit of energy
