Can someone explain the law of conservation of energy?give some examples?
Energy cannot be created or destroyed, only changed from one form to another. There are many kinds of energy, but two kinds are kinetic energy and potential energy. Kinetic energy is energy of motion. Potential energy has several forms, but one form is energy of height. If you have a rock in your hand, it has no kinetic energy because it is not moving and it has some potential energy because it is above the ground. If you throw it up, you are using your muscles to give it kinetic energy. It uses that energy to go up, but since being higher means it has more potential energy, it slows down as it goes up, converting kinetic energy into potential energy as it goes. At some point it is so high that its potential energy equals the kinetic energy you originally gave it when you threw it, and it has converted all its kinetic energy to another form so it stops. If there is no hand to hold it there, the potential energy immediately starts changing to kinetic energy again and the rock falls agai
