PHYS - Stopping Distance
Physics, stopping distance - IBDP | DSE | GCE | IAL | AP Physics
Questions on stopping distance of cars sometimes appear on IGCSE Physics exam 👉
When a driver encounters an emergency, he needs to stop the car in the shortest distance possible.
The distance the car travels before coming to a stop after the driver realizes he needs to stop is called stopping distance.
The graph shows the minimum stopping distance for a car travelling at different speeds on a dry road.
(a) Write an equation to show the link between stopping distance, braking distance and thinking distance.
stopping distance = thinking distance + braking distance
* thinking distance = distance traveled during the time it took for the driver to actually apply the brake after realizing he needs to stop the car
* braking distance = distance traveled after the driver applies the brake
(b) Describe the patterns shown in the graph.
(c) If the road is icy, describe what change there would be to the thinking distance and the braking distance.
A rabbit runs across the road in front of a car. The driver applies the brakes. State factors that affect the chance of the rabbit escaping without being hit.
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