The process of braking or accelerating an automobile is highly complex, requiring the skilful use of both

feedback and feedforward mechanisms to drive safely. For this process, identify:

a$)$ The controlled variable$($s$)$

b$)$ the set point,

c$)$ the manipulated variable$($s$)$ and

d$)$ explain how feedback is used in this accelerating$/$braking process.

e$)$ How does feedforward control come into the accelerating$/$braking process when one is

attempting to drive in traffic at a constant speed?