Always use your name for store id. It's most convenient. whenever you have some problems with product, they will ask you for id. So, its better to use real name. I often use some fictitious characters like Peter Parker, Ken Adams, etcetera while signing up on some timepass websites.
The gravitational potential energy near a planet is then negative, since gravity does positive work as the mass approaches. This negative potential is indicative of a bound state; once a mass is near a large body, it is trapped until something can provide enough energy to allow it to escape.
A system possesses energy if it has the ability to do work. Work shifts energy from one system to another. Energy isâ¦ a scalar quantity, abstract and cannot always be perceived, given meaning through calculation, a central concept in science. Energy can exist in many different forms. All forms of energy are either kinetic or potential. The energy associated with motion is called kinetic energy. The energy associated with position is called potential energy. Potential energy is not stored energy. Energy can be stored in motion just as well as it can be stored in position.