PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.

7th Edition

ISBN: 9781119610526

Author: Mannering

Publisher: WILEY

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#### Concept explainers

Question

Chapter 2, Problem 3P

To determine

The final weight of the car to achieve the top speed.

Expert Solution & Answer

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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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions

- 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.
*arrow_forward*A 11120 N car is designed with a 310 cm wheelbase. The center of gravity is located 60 cm above the pavement and 105 cm behind the front axle. If the coefficient of road adhesion is 0.6, what is the maximum tractive effort that can be developed if the car is (a) front-wheel drive and (b) rear-wheel drive? From the previous question, how far back from the front axle would the center of gravity have to be to ensure that the maximum tractive effort developed for front- and rear-wheel drive options is equal?*arrow_forward*A 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_forward* - A vehicle manufacturer is considering an engine for a new sedan (CD = 0.41, Af = 1.95 m2). The car is being designed to achieve a top speed of 75 kph on a paved surface at sea level (p = 1.225 kg/m³). The car currently weighs 1100 kg, but the designers initially selected an underpowered engine because they did not account for aerodynamic and rolling resistances. What they did not know is that the test is done on a downhill with a grade of %3D 3%. If 1.2 kg of additional vehicle weight is added for each unit of horsepower needed to overcome the neglected resistance, what will be the additional horsepower of the car if it is to achieve the 75 kph top speed? 9.962 O 8.175 4.446 None of these O 7.354 6.742 8.511
*arrow_forward*A 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_forward*Estimate the power requires to accelerate a 1350 kg vehicle traveling at 48 kph up a 5% grade at the rate of 1.8 m/sec². The roadway has a straight alignment and a badly broken and patched asphalt surface. Rolling resistance of vehicle is 167 N/metric-ton, Air density = 1.2 kg/m³, and Aerodynamic drag coefficient = 1.3. Express power in watts using the formula P = RV. Use the formula for:*arrow_forward* - A 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*Determine 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_forward*A 11120 N car is designed with a 310 cm wheelbase. The center of gravity is located 60 cm above the pavement and 105 cm behind the front axle. If the coefficient of road adhesion is 0.6, what is the maximum tractive effort that can be developed if the car is (a) front-wheel drive and (b) rear-wheel drive?*arrow_forward* - Determine the final velocity of car. Initial velocity-5 m/s acceleration=2 m/s2 time-2 s
*arrow_forward*Suppose you want to design an air – bag system that can protect the driver in a head on collision at a speed of 100 kph. Estimate how fast the air bag must inflate to effectively protect the driver. Assume the car crumples upon impact over a distance of about 1m. How does the use of the seat belt help the driver?*arrow_forward*1. A car is able to provide 300kW of tractive power, as it accelerates from 36 to 288km/hr, along a flat and level section of road. This is achieved in 2 seconds. b) Calculate the tractive force at 288km/hr.*arrow_forward*

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