Work, Energy and Power: Definitions and Formulas Work is the amount of mechanical energy an object transfers when it undergoes a force. It is calcula...
Work is the amount of mechanical energy an object transfers when it undergoes a force. It is calculated by multiplying the magnitude of the force applied to the object and the displacement of the object in the direction of the force.
Formula:
Work = Force x Displacement
Example: If a force of 10 N pushes an object 5 m in the direction of the force, the work done would be 50 J (10 N x 5 m).
Energy is the ability to do work. It is the total amount of kinetic and potential energy an object possesses.
Formula:
Energy = Work
Example: If a car travels 10 m with a velocity of 20 m/s, its kinetic energy would be 400 J (0.5 x 10^2 x 20).
Power is the rate at which work is done or energy is transferred. It is calculated by dividing the change in work by the change in time.
Formula:
Power = Work done / Time taken
Example: If a force of 10 N pushes an object 5 m in 10 s, the power would be 1 W (10 N / 10 s).
Additional Notes:
Work and energy are related concepts. Work can be converted into energy, and energy can be converted into work.
Power is a measure of how quickly work is being done or energy is being transferred.
Different units are used for work, energy, and power, depending on the context