The car decelerated at a rate of 10 ft/s^2 after the brakes are applied and stops at 300 ft from its initial position. What is the initial velocity of the car as it was traveling before the brakes were applied? How much time it takes the car to stop?

The car decelerated at a rate of 10 ft/s^2 after the brakes are applied and stops at 300 ft from its initial position. What is the initial velocity of the car as it was traveling before the brakes were applied? How much time it takes the car to stop?

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 car is traveling up a 1.5% grade at 65 mi/hr on good, wet pavement. The driver brakes to try to…

A: Given; Grade: 1.5% (or 0.015 as a decimal) Initial speed: 65 mi/hr Reaction time: 1.5 seconds…

Q: A car is driving at 75 mph down a 4.0% grade on poor, wet pavement. The car's braking efficiency is…

A: velocity of car(v)=75mph=gradient of road(n)=4%=0.04(downward)breaking efficiencydistance of…

Q: A truck travels along a straight, level road at the speed of 79ft/sec. when the driver is forced to…

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: A highway curve of 120 m radius is banked to give equal wheel reactions for a speed of 48 kph. If…

A: The given data is as follows: Radius of curve=120 mSpeed to give equal wheel reactions=48…

Q: an intersection with speed 45 mph. The road has a downhill grade of 1%. When the car is at a…

A: Using relation for stopping distance SSD=vt+v22gf±Gv=45mph=66ftsG=-1%=-0.01

Q: A car braked with a constant deceleration of 16 ft/sec^2, producing skid marks measuring 200 ft…

A: ASKED: To determine the speed of the car before the application of brakes. Given, Constant…

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 driver travelling at 50mph sees a hazard (boulder) at a certain distance ahead. The driver then…

A: Given Data: The initial velocity is u=50 mph The deceleration is a=10 m/s2 The PIEV time is t=2 s…

Q: In traveling a distance of 4.2 km between points A and D, a car is driven at 104 km/h from A to B…

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The car is traveling at a speed of 75 mi/hr as it approaches point A. Beginning at A, the car…

A: Speed = 75 mil/hrdecelerates = 7.4 ft/s2 (upto B) =3.7 ft/s2 (after B)

Q: To estimate the vehicle's speed just before it hit a road median, a traffic engineer measured the…

A: Given: The braking distances for different trials are, 495 ft, 513 ft, 504 ft, 531 ft As per IRC the…

Q: If a typical heavy truck (140 lb/hp or85 kg/kW) enters a 4% grade with an initial speed of 60 mph…

A: Weight/power ratioGradeDistanceTo find: Speed of the truck at the top of the hill.

Q: A driver on a level two-lane highway observes a truck completely blocking the highway. The driver…

A: Longitudinal friction(f) = 0.45 Distance at which vehicle stopped from truck = 10m The initial speed…

Q: descending a 10% grade at a speed of 75 mi/h, David notices a large object in the roadway ahead of…

A: Using the equation D=VT [Basic equation to find the distance ] here ,V=velocity=75mi/h…

Q: Question An engineer has designed a road with a curve of radius 12 m. The material of the road…

A: Given- Radius of curve R=12 m, coefficient of friction =0.3, It is needed to find the maximum…

Q: A driver traveling at 50 mph sees a wall at a certain distance ahead. The driver applies the brakes…

Q: During a braking test, a car is brought to rest beginning from an initial speed of 54 mi/hr in a…

A: 1 mile = 5280 ft. First test: final velocity = 0 ft/hr (because car comes to rest)…

Q: Q.64 A motorist travelling at 100 km/h on a highway needs to take the next exit, which has a speed…

Q: Calculate the magnitude of the largest normal acceleration that occurs anywhere on the track

A: 1 km = 1000 m 1 hr = 3600 sec Total track length covered by sprinter = 200 mAt A velocity, u = 0 At…

Q: A bus initially at a bus stop accelerates continuously for a kilometer, taking a minute and a half.…

A: Data given : Intial speed(v0) = 0 m/s let acceleration = a distance(d1) = 1 km =1000m time(t1) = 90…

Q: A train accelerates uniformly and it passes consecutive mile marks as it travels at velocities of 7…

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

A: Given- upward gradient G=+4%f=0.46g=10 m/s2Initial speed v1=20 m/sfinal speed v2=10 m/sIt is…

Q: Two cars A and B have a velocity of 60 mph in the same direction. A is 250 ft behind B when the…

A: v= 60mph = 88ft/sec l= 250ft a = -10ft/s2 It has been asked in the question that what time will A…

Q: Q4) A driver is travelling at 45 mph. He is 60m from a traffic light when he sees turn yellow. His…

A: Speed of the car = 45 mph reaction time = 0.5 s the distance of traffic light and vehicle = 60 m

Q: Question 3: A) A driver is traveling at an average speed of 40 kph when a person is crossing the…

A: Given DataV=40 kmpht=2 seca=5 m/sec2F=coefficient of friction=ag=59.81=0.51Now we know that…

Q: determine the constant deceleration

A: This question has been taken from transportation engineering

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

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: The car is traveling at a speed of 75 mi/hr as it approaches point A. Beginning at A, the car…

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: The car is traveling at 48 km/h when the traffic light 90 m ahead turns yellow. The driver 1. takes…

Q: A van is driven at 60 km/h and is brought to a full stop with constant deceleration in 7seconds. If…

Q: A driver on a level two-lane highway observes a truck completely blocking the highway. The driver…

A: According to given data A driver on a level two-lane highway observes a truck completely blocking…

Q: 1. Two cars A and B have a velocity of 60 mph in the same direction. A is 250 ft behind B when the…

A: Step1-

Q: car is traveling up a 3% grade, with the speed of 85mph, on a road that has good, wet pavement. A…

A: Gradient = +3% Initial speed, vo = 85mph = [85 x 1.467] ft/sec Total distance covered in brake…

Q: The car is traveling at a speed of 60 mi/hr as it approaches point A. Beginning at A, the car…

Q: A car is traveling on a -4.20% grade for a design speed of 90 kph. Coefficient of friction between…

A: Given Velocity= 90 kph Coefficient of friction= 0.33 Reaction time= 2.5 sec

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 car decelerated at a rate of 10 ft/s^2 after the brakes are applied and stops at 300 ft from its initial position.

What is the initial velocity of the car as it was traveling before the brakes were applied?

How much time it takes the car to stop?

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 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

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?
2.30 An engineering student is driving on a level roadway and sees a construction sign 500 ft ahead in the middle of the roadway. The student strikes the sign at a speed of 25 mi/h. If the student was traveling at 55 mi/h when the sign was first spotted, what was the student's associated perception/reaction time (use practical stopping distance)?
O-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.
2-A motorist travelling at 100 km/h on a highway needs to take the next exit, which has a speed limit of 50 km/h. The section of the roadway before the ramp entry has a downgrade of 3% and coefficient of friction f is 0.35. In order to enter the ramp at the maximum allowable speed limit, find the braking distance (expressed in m) from the exit ramp.
1. A car is approachin an intersection with velocity 35 mph. When the car is at a distance of 200 ft from the intersection, the signal turned yellow. If the driver decides to break, will he be able to stop safely? The driver's reaction time is 1.5 s. Assume the road surface as leveled. The maximum braking effort is applied. Will your answer change, if the grade of the road surface is downhill 3%? A car is at a distance of 200 ft from an intersection stop line when the signal turned yellow. What should be the minimum speed of the car (miles/hour) if the driver decides to apply brake and is just able to stop at the line? Use reaction time of 1.5 s and the road surface has zero grade.
Problem 4 Two cars are approaching each other from the opposite direction. Both cars are traveling the same grade of 4%. The speed of the car ruhning uphill is 40mph and the other running at 60mph. If reaction time for both drivers is 3.5 sec and friction is 0.5, compute the maximum distance required to avoid collision.
Please kindly answer full question. Help me with right solution... Urgent
A rear-wheel-drive 2800-lb drag race car has a 170-inch wheelbase and a center of gravity 20 inches above the pavement and 140 inches behind the front axle. The owners wish to achieve an initial acceleration from rest of 22 ft/s 2 on a level paved surface. What is the minimum coefficient of road adhesion (in %) needed to achieve this acceleration? (Assume y m = 1.00.)
An auto A is moving at 6m/s and accelerating at 1.5m/s^2 to overtake an auto B which is 115.2m ahead. If auto B is moving at 18m/s and decelerating at 0.9m/s^2. Determine the distance travelled by A when it overtakes car B.
The freeway speed for a 40 foot long vehicle that spends 1.5 seconds occupying a 6 foot radius, approximately circular loop is .... ...... 34.7 ft/sec 27ft /sec 22 ft/sec O 30 ft/sec
please answer quickly