In this statement, Maslow is arguing that not all of our needs are equally important. Some needs, such as food or thirst, are our priority, and only when we satisfy these do we begin to think about others such as love and self-esteem.
An example that shows this are people who live in extreme poverty and steal food. People in this situation would rather compromise their safety, freedom and maybe even self-worth in order to satisfy their hunger.
However, some evidence points to the opposite as well. For example, soldiers who join the war do so to fulfill abstract needs such as earning respect and finding meaning, even if this means risking their safety, having little to eat and facing many uncomfortable situations. Another example is athletes. Athletes train to a degree that is uncomfortable and hard. They also limit their food intake to certain types of food in order to achieve goals such as self-fulfillment and a higher self-esteem.
The mechanical energy of an object is equivalent to the sum of its potential and kinetic energy. If the helicopter is grounded, then its mechanical energy will be 20 J. If it is in the air, then its potential energy will be calculated using:P.E = mghAnd then added to the kinetic energy to obtain mechanical energy.
<span>The number is seven, with a tolerance of two items more or less. We can code in approximately seven items that we have heard, with some people averaging up to nine items and others as few as five items. This, however, does not take into effect the ability for people to "chunk" items together.</span>
