The car is traveling at 48 km/h when the traffic light 90 m ahead turns yellow. The driver 1. takes one second to react before he applies the brakes. (a) After he applies the brakes, what constant rate of 48 km/h deceleration will cause the car 90 m to come to a stop just as it reached the light? (b) How long does it take the car to travel the 90 m?

The car is traveling at 48 km/h when the traffic light 90 m ahead turns yellow. The driver 1. takes one second to react before he applies the brakes. (a) After he applies the brakes, what constant rate of 48 km/h deceleration will cause the car 90 m to come to a stop just as it reached the light? (b) How long does it take the car to travel the 90 m?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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b. Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B suddenly applies the brakes, causing his car to decelerate at 12 ft/s?. It takes the driver of car A 0.75s to react (this is the normal reaction time for drivers). When he applies his brakes, he decelerates at 15 ft/s? . Determine the minimum distance d between the cars so as to avoid a collision.
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The car is traveling at 48 km/h when the traffic light 90 m ahead turns yellow. The driver takes one second to react before he applies the brakes. (a) After he applies the brakes, what constant rate of deceleration will cause the car to come to a stop just as it reached the light? (b) How long does it take the car to travel the 90 m?
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