Work, in physics, is the measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. This can be done by a constant force or an irregular force. In the case of a constant force, work is simply the scalar product of the force and the displacement in the direction of the force.
There are two conditions that must be met for work to occur: first, the object must move in the same direction as the force being applied to it; and second, it must have enough mass to exert a sufficient amount of force. For example, if a man pushes a crate up a ramp with an 85.0-kg weight, he must have a sufficient mass to exert a force of 500 N.
The crate must also have enough mass to move at a consistent speed while the force is applied, so that the resulting acceleration is greater than 0 meters per second. This is the definition of a force that displaces an object, and it is important to remember this whenever we talk about work in physics or math.
When an object moves at a steady speed while undergoing a constant force, it is said to have a positive work. When an object is moved at a steady speed while undergoing an irregular force, it is said to have a negative work.
Work is a fundamental concept in physics. It is a scalar quantity, unlike force and velocity, which have a vector nature because they have no direction. Among the units of work are the foot-pound, joule, newton-metre and erg.
A common misconception about work is that it is just a physical or chemical process. It is a term used to describe a wide variety of activities that are remunerative and/or purposeful.
For example, it can mean an activity that requires a great deal of effort and/or exertion such as labor or intellectual work; and it may refer to an occupation viewed as a vocation or profession followed with zeal and interest.
It can also refer to a particular sustained activity such as a business or trade.
In addition to the aforementioned terms, other words that often are used in combination with work include employment, occupation, calling, pursuit, metier, and business.
When it comes to work, there is a broad range of experiences and opportunities available that can shape individuals in powerful ways. These experiences can range from being a source of personal growth and development to redefining what it means to be a professional.
Regardless of which career path you choose, one of the most common experiences you will have during your lifetime will be the time and energy you put into your work. This time and energy can be a resource for developing discipline, wisdom, skill, and knowledge. It can also be a way to form and strengthen relationships, develop skills in leadership, and build confidence.