Question 412 of 276 · Alberta Class 4 Knowledge Test
If both the speed and the weight of a vehicle are doubled, how much more force is required to stop it?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 412
- A: Eight times as much
Explanation
If both the speed and the weight are doubled, the force required to stop the vehicle increases eight times. Doubling only the speed requires four times the force, and doubling only the weight requires twice the force.
More questions: Stopping Distance, Mirrors and Fatigue
- 413When does a vehicle have the most traction during braking?
- 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?
- 418When is the driver of a taxi exempt from wearing a seat belt?