A 2400-lb vehicle (CD 0.38, Af = 26 ft², and p = 0.002378 slugs/ft³) is driven on a surface with coefficient of adhesion equal to 0.8 and a coefficient of rolling friction of 0.014 at all speeds. Assuming minimum theoretical stopping distances, if the vehicle comes to a stop 200 ft after brake application on a level surface and has a braking efficiency of 0.85, what was its initial speed (a) considering aerodynamic resistances, and (b) ignoring aerodynamic resistance? =

A 2400-lb vehicle (CD 0.38, Af = 26 ft², and p = 0.002378 slugs/ft³) is driven on a surface with coefficient of adhesion equal to 0.8 and a coefficient of rolling friction of 0.014 at all speeds. Assuming minimum theoretical stopping distances, if the vehicle comes to a stop 200 ft after brake application on a level surface and has a braking efficiency of 0.85, what was its initial speed (a) considering aerodynamic resistances, and (b) ignoring aerodynamic resistance? =

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A truck of mass 16,718 kg drives down the motorway at 100.9 km/hr driving towards a large metal…

A: Given data-Mass of truck = Mt = 16,718 kgIntial velocity of truck= Vt = 100.9 km/hrTruck velocity…

Q: Determine the braking distance downhill and the percent grade of the highway at that section of the…

A: Velocity (V)= 55 mph Coefficient of friction = 0.30lets say breaking distance when driving uphill =…

Q: the coefficient of static friction between the car's tires and the road is = 0.77, what is the…

Q: A 2600 lb vehicle has a drag coefficient of 0.35 and a frontal area of 22 ft?. What is the minimum…

Q: Cars are traveling on level terrain at 64 mph on a road with a coefficient o sion of 0.8. The driver…

A: Give data Velocity of car = 64 mph or miles/hr Coefficient of adhesion = 0.8 Reaction time of…

Q: A 2,015-lb vehicle has a drag coefficient of 0.35 and a frontal area of 20 ft2. What is the minimum…

Q: Determine the horsepower developed by a passenger car traveling at a speed of 60 mph on an upgrade…

A: Speed u=60mph Weight W=4500lb Area A=45ft2 To determine horsepower developed by car

Q: What is the minimum radius of curvature that can be designed for operation a safe vehicle at a speed…

A: Given, V=70 miles/ hour e= 6% f= 0.10

Q: A 3500 lb vehicle is being designed with a drag coefficient of 0.4 and a frontal area of 50 ft2. If…

A: Given Data : ρ=0.002378 slugs/ft2 C∘=0.4 G=3500 lb…

Q: A moving car is traveling at 80 kph when the brakes are applied to it. The car still moves at a…

A: From the given data Speed V = 80 kmph = 80*5/18 = 22.222 meter/sec Distance D = 35 m…

Q: The driver of a vehicle approaching a signalised intersection at a speed of 40 kmph applied brakes…

A: Speed of vehicle = V= 40kmph= 40×5/18= 11.11m/sg=9.81m/s²Amber time = 4secReaction time= tr=…

Q: The rated speed of a highway curve of 80 m radius is 30 mph. If the coefficient of friction between…

Q: A car is traveling up a 2% grade at 70 mi/h on good, wet pavement. The driver brakes to try to avoid…

A: Given: The initial speed of the car is vi=70 mi/hr×52803600 ft/sec=102.66 ft/sec. The reaction time…

Q: A level test track has a coefficient of road adhesion of 0.80, and a car being tested has a…

A: The initial velocity is v1=60 mi/hr. Final velocity is v2=0 mi/hr. The formula for theoretical…

Q: CH:5 Problem 4: Find the maximum limited speed (km/hr) for the vehicle with length-6.2m, reaction…

Concept explainers

Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.

Question

A 2400-lb vehicle (CD = 0.38, Af = 26 ft², and p 0.002378 slugs/ft³) is driven on a
surface with coefficient of adhesion equal to 0.8 and a coefficient of rolling friction of 0.014
at all speeds. Assuming minimum theoretical stopping distances, if the vehicle comes to a
stop 200 ft after brake application on a level surface and has a braking efficiency of 0.85,
what was its initial speed (a) considering aerodynamic resistances, and (b) ignoring
aerodynamic resistance?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given:

VIEW

Step 2: Solution:

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

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

The 19-Mg truck drives onto the 278-Mg barge from the dock at 25 km/h and brakes to stop on the deck. The barge is free to move in the water, which offers negligible resistance to motion at low speeds. Calculate the speed of the barge after the truck has come to rest on it. 25 km/h 278 Mg 19 Mg Answer: v = i km/h
A van is driven at 60 km/h and is brought to a full stop with constant deceleration in 7seconds. If the total car and driver mass is 1.825kg find the necessary force.
The 12-Mg truck drives onto the 231-Mg barge from the dock at 27 km/h and brakes to stop on the deck. The barge is free to move in the water, which offers negligible resistance to motion at low speeds. Calculate the speed of the barge after the truck has come to rest on it. 27 km/h 231 Mg 12 Mg Answer: v = i km/h
A section of highway has a superelevation of 0.05 and a curve with a radius of 300 ft. What is the maximum safe speed at this section of the highway? Coefficient of Side Friction Factors Assumed for Design Design Speed (mi/h) 30 40 50 60 70 Coefficients of Side Friction, f 0.20 0.16 0.14 0.12 0.10 otroom the capacity flow was observed to be 2200 yeh/h/In, an
In a certain situation it was estimated that 25% of the braking force was applied to the rear brakes in order for the car to develop the maximum forces required stop the car. If the total braking force developed was 5000 N and the road is wet (u = 0.52), wheel base of 290 cm and a center of gravity 64 cm above the pavement and 120 cm behind the front axle. Determine the weight of the vehicle (N).
A 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.
11 A highway has a design speed of 80 km/h and the friction coefficient of pavement is 0.3. Considering the reaction time of drivers as 2.5 sec and average length of vehicles as 4.5 m, determine the allowable capacity of the highway.
Determine the turning radius of taxiway of a supersonic transport aircraft with a wheel base of 30 m and tread of main loading gear as 6.0 m and design turning speed is 50 kmph. Assume co-efficient of friction between tyre and pavement surface as 0.13 and width of taxiway pavement as 22.5 m.
a truck was travelling uphill at 50kph. the brakes are suddenly applied and the truck stopped in a distance of 16.1m. if the coefficient of friction between the tires and the road surface is 0.4, what is the grade of the road?
The rated speed of a highway curve of 300-ft radius is 40 mph. If the coefficient of friction between the tires and the road is 0.60, what is the maximum speed at which a car can round the curve without skidding?
Two drivers each have a reaction time of 2.5 seconds. One is obeying a 90 km/h speed limit, and the other is travelling illegally at 108 km/h. How much distance will each of the drivers cover while perceiving/reaction to the need to stop, and what will the total stopping distance be for each driver (using practical stopping distance and assuming roadway grade g = -2.5%). Longitudinal friction coefficient (fi) can be calculated by the equation f = 1.0371 V-0.2729 where V vehicle speed in km/h.|
8 ft wheelbase Rear-wheel drive Center of gravity 17 inches above the road 4.1 ft behind the front axle. The car weighs 2500 lb Mechanical efficiency of the drivetrain is 93% Wheel radius is 14 inches. If the engine develops 190 ft-lb of torque and the overall gear reduction ratio is 7 to 1, what is the maximum acceleration from rest for the car? Assume good, dry, and level pavement conditions.