Energy is the capacity of a physical system to perform work. Work is defined as the integral of the force over a distance of displacement. There are different types of energy that we learned about this week in class. We learned that kinetic energy is the energy possessed by a system or object as a result of its motion. We also learned that potential energy is the ability of a system to do work due to its position or internal structure. In class, we also learned about the conservation of energy. According to the law of conservation of energy, the total energy of a system remains constant, though energy may transform into another form. A rollercoaster is a perfect example of how energy is used.
The SI unit of energy is the Joule (J) or Newton-meter (N*m). This is also the SI unit of work.
No comments:
Post a Comment