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MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781305581159
Author: Nicholas J. Garber; Lester A. Hoel
Publisher: Cengage Learning US
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Question
Chapter 3, Problem 13P
To determine
Horsepower developed by a passenger car.
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Determine the horsepower developed by a passenger car traveling at a speed of 60 mph on an upgrade of 4% with a smooth pavement. The weight of the car is 4500 lb and the cross-sectional area of the car is 45 ft2.
Determine the horsepower developed by a passenger car traveling at a speed of 50-mi/h on an upgrade of 5% with a smooth pavement. The weight of the car is 4,500-lb and the cross-sectional area of the vehicle is 50 square-feet. Repeat this for a 24,000-lb truck with cross-sectional area of 100 square-feet and coefficient of drag of 0.5 traveling at 55-mi/h.
1. The driver of a vehicle traveling at 80 kph up a grade requires 9 m less to stop after he applies
the brakes than the driver travelling at the same initial speed down the same grade. If the
coefficient of friction between the tires and pavement is 0.50, what is the percent grade and
what is the braking distance down the grade.
V,=80 kph
V2=0
brakes are
applied
S-9
V,=80 kph
V2=0
brakes are
applied
-S-
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MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
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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
- Read the question carefully and give me all right solutions. A 1.36-ton passenger car with front cross-sectional area of 3.4 m2 wastraveling at a speed of 105 km/hr on a smooth pavement. Determine:a. The horsepower required to maintain speed on a straight and levelroadb. The horsepower required to maintain speed as the vehicle travels up a5% gradec. The horsepower required to maintain speed as the vehicle traversesonto a horizontal curve of 305 m radiusarrow_forwardQuestion..arrow_forwardHelp mee pleasee. Complete solutionarrow_forward
- III. 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_forwardThe braking distance of a car from 90 km/h is 40 m assuming the pavement is level. (a) if the pavement is with 5° inclination, what will be the braking distance (in meter) of the car going up from 90km/h? (b) and if the car is going down at 6% inclination, what is its braking distance (in meter) from 90km/h? Note: Assume the breaking force is not dependent of the grade. Select the correct response(s): O 42.71 O 45.78 O 52.34 O 43.25 O 54.12 O 46.77 O 34.30 O 36.05 O 44.13 O 40.95 O 41.96 O 50.90 O O O O O O O O Oarrow_forwardreally need help asap plsarrow_forward
- The driver of a vehicle saw a stray dog 40 meters away and decided to hit the brakes instantaneously. If the distance of the vehicle from the dog is 15 meters after the vehicle had stopped, what is the average skid resistance of the pavement if the vehicle is travelling at a speed of 65 kph?arrow_forwardCalculate the average skid resistance of the pavement surface when a vehicle travelling at a speed of 35 kmph was stopped by applying brakes fully? (Assume the skid marks were 6 m in Length.)arrow_forwardA vehicle moving at 40km/h speed was stopped by applying brake and the length of the skid mark was 12.2 m. if the average skid resistance of the pavement is 0.70, what is the brake efficiency of the test vehicle.arrow_forward
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