A driver is driving a car at a constant velocity of 20 m s-1 along a straight, horizontal road when they suddenly observe a hazard.
The driver reacts and applies the brakes, bringing the car to a complete stop. The velocity-time graph below represents the motion of the car from the moment the hazard is spotted (t=0 st = 0\text{ s}t=0 s) to the moment the car stops (t=3.8 st = 3.8\text{ s}t=3.8 s).
What is the total stopping distance of the car?
30 m30\text{ m}30 m
38 m38\text{ m}38 m
46 m46\text{ m}46 m
76 m76\text{ m}76 m