You see yourself as a highway engineer, so that you are thinking that the maximum centripetal acceleration on a curve is no more than 1.2 m/s^2. What is the minimum curvature to accomodate a 114 km/h maximum speed?  I don't understand conceptually what is needed.  R in minutes = value in units

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 12OQ
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You see yourself as a highway engineer, so that you are thinking that the maximum centripetal acceleration on a curve is no more than 1.2 m/s^2.

What is the minimum curvature to accomodate a 114 km/h maximum speed?  I don't understand conceptually what is needed.  R in minutes = value in units

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