If it takes 30 mph to stop, it will take how many times as much distance to stop at 60 mph?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the Wisconsin Law Enforcement Standards Board (LESB) Phase 2 Exam. Test your knowledge with our practice questions and flashcards. Each question includes explanations to improve your understanding. Start studying today!

Multiple Choice

If it takes 30 mph to stop, it will take how many times as much distance to stop at 60 mph?

Explanation:
When braking with a roughly constant deceleration, stopping distance grows with the square of your speed. Doubling the speed from 30 mph to 60 mph makes the stopping distance increase by a factor of (60/30)^2 = 4. So you would need four times as much distance to stop.

When braking with a roughly constant deceleration, stopping distance grows with the square of your speed. Doubling the speed from 30 mph to 60 mph makes the stopping distance increase by a factor of (60/30)^2 = 4. So you would need four times as much distance to stop.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy