The driver of a 1000kg car traveling on the interstate at 35.0 m/s slams on his brakes to avoid hitting a second vehicle in front of him, which had come to rest because of congestion ahead. After the brakes are applied, a constant friction force of 8000 N acts on the car. Ignore air resistance. (a) At what minimum distance should the brakes be applied to avoid a collision with the other vehicle? (b) (b) If the distance between the vehicles is initially only 30.0 m, at what speed would the collision occur? Ax

The driver of a 1000kg car traveling on the interstate at 35.0 m/s slams on his brakes to avoid hitting a second vehicle in front of him, which had come to rest because of congestion ahead. After the brakes are applied, a constant friction force of 8000 N acts on the car. Ignore air resistance. (a) At what minimum distance should the brakes be applied to avoid a collision with the other vehicle? (b) (b) If the distance between the vehicles is initially only 30.0 m, at what speed would the collision occur? Ax

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: The 14-Mg truck drives onto the 303-Mg barge from the dock at 16 km/h and brakes to stop on the…

A: Given data : Mass of truck (MTruck)=14 MgVelocity of truck (VTruck)=16 Km/hMass of barage (MBarage…

Q: The design speed of traffic lane is 100 km/hr. Estimate its theoretical capacity by assuming the…

Q: 66. An automobile approaches a barrier at a speed of 20 m/s along a level road. The driver locks the…

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 5-Mg truck and 2-Mg car are traveling with the free-rolling velocities of 37 km/h and 13 km/h,…

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

Q: A road having a radius of 120m and has an angle of 9.31° from the horizontal. The center of gravity…

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: If the car continues a horizontal path with the same speed, assuming no friction losses, what speed…

A: Answer By law of conservation of Momentum we know that the amount of Impulse on the system is equal…

Q: 4) You have been called to testify as an expert witness in a trial involving a head-on collision.…

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 2400-lb vehicle (CD 0.38, Af = 26 ft², and p = 0.002378 slugs/ft³) is driven on a surface with…

Q: If the horse power 107.1 hp produced by a passenger car traveling at a speed of 84 mi/h on a…

A: When the vehicle moves on the road then some forces acting on them that resist the speed of the…

Q: A 2000-kg airplane lands on a runway with 9% grade with a touchdown speed of 130km/h, where tihe…

Q: f gravity of the car i en the two front wh

Q: Determine the horsepower produced by a passenger car travelling at a speed of 68 mi/hr on a radius…

A: Given data, Speed (u) =68 mph Weight (W) =4500 lb Area (A) =45 ft2 Radius of curvature = 1200 ft…

Q: 10.11 A single lane highway is having a design speed of 65 km/h and the pavement is having a…

A: V=65kmph L=5m t=2.5sec

Q: The average speed of vehicles on a road with a downgrade of 4% is 90 kph. A traffic study was…

A: Given:Average speedV=90 kph at a gradient of n1=-4%Breaking distanceD=120 m

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: determine the constant deceleration

A: This question has been taken from transportation engineering

Q: Initially, the car travels along a straight road with a speed of 35 m/s. If the brakes are applied…

Q: Refer to the following illustration; veh#2 is driving with the speed of 60mph, following veh#1 whose…

A: Speed of vehicle 1, Speed of vehicle 2, Distance, Level grade.To find: Minimum distance between two…

Q: A car travelling at 40 mph on uphill grade of 5%. If the brakes are suddenly applied, it will travel…

A: Given information, Velocity of vehicle (V) = 40 mph Stoping distance (L) = 56 m Slope (S) = 5%…

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

Q: The 19-Mg truck drives onto the 278-Mg barge from the dock at 25 km/h and brakes to stop on the…

Q: A section of highway has a superelevation of 0.05 and a curve with a radius of 300 ft. What is the…

A: since it is the problem of design so initially i have to assume the data here for f that is…

Q: In a certain situation it was estimated that 25% of the braking force was applied to the rear brakes…

Q: A 1500 kg automobile that has 2 m of frontal area is driven on a surface and the coefficient of…

Q: gravity of the car en the two front wl

Q: highway has a design speed of 80 km/h and the friction coefficient of pavement is 0.3. Considering…

A: Given: Design Speed, V = 80 km/h Friction coefficient, f = 0.3 Reaction time, t = 2.5 s Average…

Q: of 30 m and tread of main loading gea 5.0 m and design turning speed is

A: Given:- wheel base=30m tread=6.0m design turning speed=50kmph coefficient of friction between tyre…

Q: The braking distance of a car from 100 km/h is 50 m assuming the pavement is level. (a) if the…

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

A: Speed u=40 kmphAmber time=4 sReaction time=1 sTo Find-The average friction coefficient developed.

Q: O-A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient of…

A: Given data- upward gradient G=+4%=0.04,initial speed v1=20 m/s.f=0.46,g=10 m/s2,final speed v2=10…

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

The driver of a 1000kg car traveling on the interstate
at 35.0 m/s slams on his brakes to avoid hitting a
second vehicle in front of him, which had come to rest
because of congestion ahead. After the brakes are
applied, a constant friction force of 8000 N acts on
the car. Ignore air resistance.
(a) At what minimum distance should the brakes be
applied to avoid a collision with the other vehicle?
(b) (b) If the distance between the vehicles is initially
only 30.0 m, at what speed would the collision
occur?
AX

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 data

Step 2: Calculation

Step 3: Calculation

Solution

Trending now

This is a popular solution!

Step by step

Solved in 4 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

Determine the total distance traveled by an automobile from the moment the driver observed the danger while driving at 75 kph. Skid resistance is 0.60 on average
A truck traveling at 48 mi/h on a curve road with 470 ft radius ,the cross section area for the truck is 58 feet square and the weight is 12000 lb , the road is smooth pavement with 2% down grade . find the horsepower produced by the truck ? Please urgent... Thank you
Coefficient of friction between the tires and the roadway depends a lot on final vehicle speed True O False O
PROBLEM 1: A car travels a 10-degree inclined road at a speed of 20 ft/s. The driver then applies the break and tires skid marks were made on the pavement at a distance "s". If the coefficient of kinetic friction between the wheels of the 3500-pound car and the road is 0.5, determine the skid mark distance.
2. A highway is having a design speed of 65 km/h and its pavement is having a friction coefficient of 0.4. If the reaction time of drivers is taken as 2.5 sec and average length of vehicles as 5 m, determine the capacity of the highway.
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.
Each tire on the 1425-kg car can support a maximum friction force parallel to the road surface of 2170 N. This force limit is nearly constant over all possible rectilinear and curvilinear car motions and is attainable only if the car does not skid. Under this maximum braking, determine the total stopping distance s if the brakes are first applied at point A when the car speed is 18 m/s and if the car follows the centerline of the road.
Calculate the capacity (vehicle per hour) of the road when reaction time of the driver is 2 seconds. The design speed is 80 kmph and average length of the vehicle is 6 m. Take coefficient of friction as 0.35.
A car traveling at 45 mph on a poor, wet pavement has a braking efficiency of 87%. The brakes were applied 100 feet before hitting an obstacle in the road. The road is uphill for 40 feet and then is level for the remainder of the way. The car had a maximum coefficient of road adhesion in the sloped portion of the poor, wet roadway and but as soon as it started going on the level portion its coefficient of road adhesion reduced to 0.3. Assuming that the car struck the obstacle at 30 mph, what was the grade of the hill? Assume practical stopping distance equation applies.
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 radius
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.