Question 411 of 276 · Alberta Class 4 Knowledge Test
How much braking force is needed to stop a vehicle when its speed is doubled?
Exactly one answer is correct.
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Correct answer to question 411
- C: Four times the force
Explanation
Doubling the vehicle speed means that four times the braking force is required to bring the vehicle to a stop. The greater the speed, the more time and distance are needed to stop.
More questions: Stopping Distance, Mirrors and Fatigue
- 412If both the speed and the weight of a vehicle are doubled, how much more force is required to stop it?
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- 414What is the average person's perception time?
- 415About how long does it take an air brake system to respond after the driver presses the brake pedal?
- 416Total stopping distance is the sum of which distances?
- 417Compared with a level road at the same speed, how does a downhill grade affect stopping distance?