Answer :
Final answer:
The total stopping distance of an automobile is the sum of the perception distance, reaction distance, and braking distance, and is a key concept in both driving safety and physics.Hence option B is correct.
Explanation:
The question refers to the components that make up the total stopping distance of an automobile. When a driver perceives a hazard, there is a distance covered during this perception distance, added to this is the reaction distance, which is the distance covered from the moment the driver decides to brake to when the brakes are actually applied.
Finally, there's the braking distance, which is the distance the car travels once the brakes are engaged until it comes to a complete stop. Together, these distances equal the total stopping distance. It's a crucial concept for driver safety and is also a fundamental physics problem involving kinetics.
With a given velocity and assuming it remains constant during the driver's reaction time, we can calculate the total distance covered during the reaction time by multiplying velocity by the reaction time. This distance is then added to the stopping time to find the total stopping distance.
