a) Define work, power, energy and state their S.Iunits.

1.	a) Define work, power, energy and state their S.Iunits.
Answer» Work : Workdone is defined as product of the force and the distance over which the force is applied.Workis done when a force is applied to an object and the object is moved through a distance. For example, whenyoulift a loadyouare applying a force over a distance soyouare doingwork. SI unit is Joule. Power : Poweris the rate (energyamount per time period) at which work is done orenergyconverted. TheSI ofpoweris the watt (W), which is equal to one joule (energyamount) per second (time period). Energy : The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force.Energycan exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. SI unit is Joule

Answer»

Work : Workdone is defined as product of the force and the distance over which the force is applied.Workis done when a force is applied to an object and the object is moved through a distance. For example, whenyoulift a loadyouare applying a force over a distance soyouare doingwork. SI unit is Joule.

Power : Poweris the rate (energyamount per time period) at which work is done orenergyconverted. TheSI ofpoweris the watt (W), which is equal to one joule (energyamount) per second (time period).

Energy : The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force.Energycan exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. SI unit is Joule

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