Answered: When a car is travelling at 60kph,…

When a car is travelling at 60kph, after the brakes suddenly applied, the car will still travel 30m before it stops. What is the coefficient of friction between the tires and the road surface?

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter3: Characteristics Of The Driver, The Pedestrian, The Bicyclist, The Vehicle, and The Road

Section: Chapter Questions

Problem 9P

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Concept explainers

Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.

Question

When a car is travelling at 60kph, after the brakes suddenly applied, the car
will still travel 30m before it stops. What is the coefficient of friction between
the tires and the road surface?
O 0.42
O 0.47
O 0.52
O 0.36

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