Energy
We sometimes describe energy as 'ability to do work' like spinning, running, heating etc. All these activities need energy. By the law of conservation Energy can't be created nor be destroyed e.g. if you switch on the fan the electrical energy is converted into kinetic (motion) energy and heat energy.
The main source of energy is the sun,
The light energy of sun is converted into chemical energy and used by plants which then eaten by us. There are many type of energies around us-
1. Kinetic energy is energy acquired a object when it gain motion for example I started walking then I gained kinetic energy.
2. Potential energy is latent energy of stationary object which when force is applied convert into kinetic or any other form of energy.
There are many more types of energies but I'll explain it later.
Work
Work is done when force is applied to an object and it displaces from its initial place.
It is usually expressed as (W).
Power
Power is rate of doing work e.g. two boys climbs a hill one did it faster than she said to be possess more power.
We sometimes describe energy as 'ability to do work' like spinning, running, heating etc. All these activities need energy. By the law of conservation Energy can't be created nor be destroyed e.g. if you switch on the fan the electrical energy is converted into kinetic (motion) energy and heat energy.
The main source of energy is the sun,
The light energy of sun is converted into chemical energy and used by plants which then eaten by us. There are many type of energies around us-
1. Kinetic energy is energy acquired a object when it gain motion for example I started walking then I gained kinetic energy.
2. Potential energy is latent energy of stationary object which when force is applied convert into kinetic or any other form of energy.
There are many more types of energies but I'll explain it later.
Work
Work is done when force is applied to an object and it displaces from its initial place.
It is usually expressed as (W).
Power
Power is rate of doing work e.g. two boys climbs a hill one did it faster than she said to be possess more power.
