Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P observes this speed via radar. The driver of car A sees and reacts very unwisely to the police car P. Car A is traveling at VA = 129 km/h as it passes P, but over the next 4.9 seconds, the car uniformly accelerates to 149 km/h, after which that speed is maintained. At the moment when A passes P, the police car begins to accelerate at the constant rate of 4.4 m/s² until a speed of 177 km/h is achieved, and that speed is then maintained. Determine the distance s required for the police officer to overtake car A. Answer: s= i VA P m

Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P observes this speed via radar. The driver of car A sees and reacts very unwisely to the police car P. Car A is traveling at VA = 129 km/h as it passes P, but over the next 4.9 seconds, the car uniformly accelerates to 149 km/h, after which that speed is maintained. At the moment when A passes P, the police car begins to accelerate at the constant rate of 4.4 m/s² until a speed of 177 km/h is achieved, and that speed is then maintained. Determine the distance s required for the police officer to overtake car A. Answer: s= i VA P m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A driver takes 3.2 seconds to react to a situation complex while driving at 55 miles/hour. How far the vehicle goes before the driver initiates a physical response to the situation (i.e., applies the brakes)?
A vehicle is moving along a straight line having an initial speed of 10 m/s. It is experiencing a deceleration of -0.5v2 m/s2 . Determine the distance travelled by the vehicle after three seconds.
Initially the car travels along a straight road with a speed of 35 m/s. If the brakes are applied and the speed of the car is reduced to 10 m/s in 13 s, determine the constant deceleration of the car.
The field observations for the traffic characteristics of a road segment showed that the density = 60 veh/km and speed = 55 kph. What is the traffic speed at maximum flow rate if Dj = 130 veh/km. (Use Greenberg's model). а. none b. 71 O C. 55 o d. 86 O e. 68
The reaction time of the average automobile driver is about 0.7sec. The reaction time is the interval between the perception of a signal to stop and the application of the brakes. If an automobile can decelerate at 4.5 m/sec?, compute the total distance covered in coming to stop after a signal is observed from an initial velocity of 48kph.
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^2 . It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes, he decelerates at 19 ft/s^2. Determine the minimum distance d between the cars so as to avoid a collision.
Car A travels due east at an initial velocity of 10km/hour then constantly increased in velocity until it reached 50 km/ hour after 40 minutes then it maintained the velocity for the rest of its travel. Car B has an initial velocity of 90 km/ hour and gradually decelerates to a velocity of 60 km/hr after traveling for 20 minutes it then maintained the velocity of 60 km/hour for the rest of its travel time. If car B travels due east 15 minutes after car A started at what distance from their starting?
While a car is moving with a speed 108 k on a straight road the driver sees a truck which enters the road 75m ahead. The driver applies full brake 0.5s after s/he observes the truck, however the car hits the truck with a speed of 50 k. Then what would be the maximum initial speed of car in when the driver observes the truck in order that the car does not hit the truck with all other conditions are the same?
Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P observes this speed via radar. The driver of car A is traveling at vÃ = 122 km/h as it passes P, but over the next 4.1 seconds, the car uniformly decelerates to the speed limit of 100 km/h, and after that the speed limit is maintained. At the moment when A passes P, the police car begins to accelerate at the constant rate of 4.0 m/s² until a speed of 164 km/h is achieved, and that speed is then maintained. Determine the distance s required for the police officer to overtake car A. Answer: s= i VA 248.52 P m
A Car rounds a 100-m radius curve at a constant speed of 60 kph. Which of the following statements is/are TRUE considering its motion on the curve path? Select ALL possible answers. O The car has a tangential acceleration. The car has a normal acceleration directed towards the center of the curved path. O The car has a normal acceleration directed away from the center of the curved path. The car has no tangential acceleration. The velocity of the car changes at any instant. O none of these
Assume you are observing traffic in a single lane of a highway at a specific location. You measure the average headway and average spacing of passing vehicles as 3.2 seconds and 20 m, respectively. Calculate the flow, average speed, and density of the traffic stream in this lane.
Car A is moving with constant speed v on the straight and level highway. The police officer in the stationary car Pattempts to measure the speed v with radar. If the radar measures "line-of sight" velocity, what velocity v' will the officer observe? Evaluate your general expression for the values v = 78 mi/hr, L= 480 ft, and D = 17 ft, and draw any appropriate conclusions. O Answer: v' = L P mi/hr