energy and its use
what is the principle of the conversation of energy?
what is power and how is it calculate
what are some common forms of energy :
energy
energy is the capacity to do work, there are many different forms of energy. three forms of energy that we encounter in our daily lives are kinetic energy, potential energy, thermal energy.
kinetic energy : :
kinetic energy is the energy which a moving object has. In other words, a moving object has kinetic energy but a stationary object has no kinetic energy, the faster an object moves, the more kinetic energy has
potential energy
potential energy is a stored energy three common forms of potential energy are: elastic potential energy, chemical potential energy and gravitational potential energy.
elastic potential energy
elastic potential energy is stored in objects which are stretched, compressed or bent
gravitational potential energy
gravitational potential energy is the energy that an object has because of the position
chemical potential energy
chemical potential energy is the energy stored in substances such as fuels and food
thermal energy
thermal energy is the energy an object has because of its temperature. the hotter an object , the more thermal energy it has.
the principle of the conservation , energy cannot be created orb destroyed , energy can only be changed from one form to another or transferred from one object to another
power is where P= power (w) E= energy converted (j) T=time taken (s)
