hi its m again am just studying for my midterm exam in automatic control i think that automatic control not i think .automatic control is very essential in allot of applications specially in car design as automatic control is based upon Laplace transformation and block diagram that is far that i know in this term this course ,automatic control and i mean Laplace transform means turning any mechanical equation into an algebraic equation and the block diagram means how to turn a system of input and output and transform system in an algebraic equation and there are some complex mechanical systems out there as automatic control is important in making cars as the movement of a car depends on the flow of motion and the friction of air with the cars and how the tires are moving on the asphalt with different speeds and not only cars but and machine needs an mechanical equation clarification to be transom into algebraic equation