In the language of Dynamics, one would explain that the Net Force on the plane was responsible for causing the accelerated motion. However, there is another language used by Physicists to explain situations such as this aircraft example. Work, on the other hand, often seems difficult for people to understand, even though it is simple to define. These other definitions often serve to confuse students. It is this definition that will be used here.
Work is the means by which energy is changed from one form to another.
When work is done on an object, therefore, the object is said to have either gained or lost a certain amount of energy of a particular type. Work is considered to be positive, negative, or zero in value, depending on the direction of transfer. Work is accomplished on an object any time a net force acts over a particular displacement , d . Computer programs that perform integration calculations do so using various numerical techniques. Science Workshop has the ability to estimate the area under a particular plot of data using one of these methods.