PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
7th Edition
ISBN: 9781119610526
Author: Mannering
Publisher: WILEY
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Chapter 2, Problem 8P
To determine
The maximum acceleration of a car from rest position, if the car is on a paved, level roadway surface with a coefficient of adhesion is
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Determine the horsepower produced by a passenger car traveling at a speed of 65 mi/h on a straight road of 5% grade with a smooth pavement. Assume the weight of the car is 4000 lb and the cross-sectional area of the car is 40 f t 2.
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Chapter 2 Solutions
PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10P
Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40P
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- A moving car is traveling at 80 kph when the brakes are applied to it. The car stillmoves at a distance of 35 m, before it completely stops. Determine the coefficientof friction between the tires and the road surface.arrow_forwardO-A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient of rolling friction as 0.46 and acceleration due to gravity as 10 m/s2. On applying brakes to reach a speed of 10 m/s, Find the required braking distance (in m, round off to nearest integer) along the horizontal.arrow_forwardA 1500 kg automobile that has 2 m of frontal area is driven on a surface and the coefficient of rolling friction is 0.0015 for all speeds. Assuming minimum theoretical stopping distances, if the vehicle comes to a stop 76 m after brake application on a level surface and has braking efficiency of 0.75. what is its initial speed a) if aerodynamic resistance is considered and b) if aerodynamic resistance is ignored? Note: g-9.81 m/s? matin. The roadway is wet with good pavement. > The automobile is traveling at an elevation of 1500 m.arrow_forward
- A car travelling at 40 mph on uphill grade of 5%. If the brakes are suddenly applied, it will travel 56 m.then stops. Determine the coefficient of friction between the road surface and the tires. Round off youranswer to two decimal places.arrow_forwardDetermine the horsepower produced by a passenger car travelling at a speed of 68 mi/hr on a radius of curvature of 1,200 ft road of 4% grade with a smooth pavement. Assume the weight of the car is 4500 lb and the cross sectional area of the car is 45 ft2.arrow_forwardThe angular displacement of the centrifuge is given by θ = 3.4[t + 29e-0.040t - 29] rad, where t is in seconds and t = 0 is the startup time. If the person loses consciousness at an acceleration level of 8.9g, determine the time t at which this would occur. Verify that the tangential acceleration is negligible as the normal acceleration approaches 8.9g.arrow_forward
- 19 190 A car travelling at 40 mph on uphill grade of 5%. If the brakes are suddenly applied, it will travel 56 m. then stops. Determine the coefficient of friction between the road surface and the tires. Round off your answer to two decimal places.arrow_forwardA 2500-lb passenger vehicle originally traveling on a straight and level road gets onto a section of the road with a horizontal curve of radius = 850 ft. If the vehicle was originally traveling at 55 mi/h, determine (a) the additional horsepower on the curve the vehicle must produce to maintain the original speed, (b) the total resistance force on the vehicle as it traverses the horizontal curve, and (c) the total horsepower. Assume that the vehicle is traveling at sea level and has a front cross-sectional area of 30 ft2.?arrow_forwardIf speed of the vehicle, v = 60 kmph, design friction coefficient 0.36 and driver reaction time is 2,5 second, then the stopping distance is: =arrow_forward
- Compute the braking distance of a car traveling at 50 kph in a horizontal surface and then brought to rest after the application of the brakes if the average skid resistance is 0.55arrow_forwardA 2500-lb passenger vehicle originally traveling on a straight and level road gets onto a section of the road with a horizontal curve of radius = 850 ft. If the vehicle was originally traveling at 55 mi/h, determine (a) the additional horsepower on the curve the vehicle must produce to maintain the original speed, (b) the total resistance force on the vehicle as it traverses the horizontal curve, and (c) the total horsepower. Assume that the vehicle is traveling at sea level and has a front cross-sectional area of 30 ft2. Show your step by step solutions.arrow_forwardA 2500-lb passenger vehicle originally traveling on a straight and level road gets onto a section of the road with a horizontal curve of radius = 850 ft. If the vehicle was originally traveling at 55 mi/h, determine (a) the additional horsepower on the curve the vehicle must produce to maintain the original speed, (b) the total resistance force on the vehicle as it traverses the horizontal curve, and (c) the total horsepower. Assume that the vehicle is traveling at sea level and has a front cross-sectional area of 30 ft2. Show your solutions and answers.arrow_forward
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