Physics for Kids. 1  Work is a scalar quantity, not a vector quantity. This means that, unlike force and velocity, it has no direction, only a magnitude. 2  Another unit of work is the foot-pound. One foot-pound is equal to 1.35581795 joules. 3  The joule is also used as the standard unit of measure for energy.
IP spoofing (IP address forgery or a host file hijack) IP spoofing, also known as IP address forgery or a host file hijack, is a hijacking technique in which a cracker masquerades as a trusted host to conceal his identity, spoof a Web site, hijack browsers, or gain access to a network.
Aloof means at a distance, and not close. Shyness is often the result of being aloof. An aloof person usually needs tunnel vision for the tranquility and happiness to block out and ignore distractions that undermine his or her concentration. Yet, there are valid reasons to be aloof: such as, studying, work, or to maintain the structure of control within an organization or industry by filtering out and blocking unwanted contact.