To an engineer, identifying a need means that . a project must be thoroughly researched

customers must communicate what they want

a particular problem must be clearly defined

a project must be budgeted and approved

Distance and velocity graph

The answer should be vaporization 

Answer it was we, the the whole people, who formed the union. and we formed it, not to give the blessings of liberty, but to secure them: not to the half of ourselves and the half of our posterity, but to the whole people- women as well as men.