The origins of modern science. Laws of motion, gravity. The nature of energy. Conservation of energy. Fd, work is done when a force moves a mass by some distance.
Energy is the ability to do work.
In some sort of sense, the universe really is just the complete set of all the different forms of energy. Nuclear reactions occur in the sun, producing light 2. Light is absorbed by plants converting it to chemical energy 3. We eat plants and convert the chemical energy into kinetic energy of our muscles 4. We climb diving board steps, converting kinetic to gravitational potential 5.