On a certain stretch of track, trains run at 60 kph. How far back of a stopped train should be a warning torpedo be placed to signal an oncoming train? Assume that the brakes are applied at once and retard the train at the uniform rate of 2 ft/sec.
Q: For a main line and a branch line on 5° curves, calculate the superelevation and the speed on the…
A: The complete trajectory of the railway line that the train runs is usually called Permanent way or…
Q: 12. The stopping sight distance of a vehicle is 295 meters. Given that the acceleration of the…
A: solution as per the guideliness consider total perception and reaction time =2.5secAAHTOacceleration…
Q: A driver is traveling in a car down a 5% grade. A downed tree comes into view. The tree is blocking…
A: Hello dear this is the solution of your problem The answer is found to be Stopping sight…
Q: On a certain stretch of track, trains run at 60 kph. How far back of a stopped train should a…
A:
Q: Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver…
A: Solution: Draw the schematic view of two cars Calculate the velocity of the car B as a function of…
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: 1015. Two cars A and B have a velocity of 60 mph in the same direction. A is 250 ft behindB when the…
A:
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: A subway train travels between two of its station stops with the acceleration schedule shown. (a)…
A: Given: Acceleration- time graph of a subway train Find (i) velocity after 14 sec (ii) time…
Q: The cruise control of the car is set to a constant 30 kph and – then the car is driving on a level…
A: Cruise control is an automatic controlling device which is used to maintain a particular speed set…
Q: A driver travelling at 50 mph is 80 m from the wall ahead. Total perception-reaction time of the…
A: The Stopping sight distance is given by S=LL+LB Where, LL=Lag distance = 0.278V×tr LB=Braking…
Q: Q6- For two cars on the same lane as shown below . is the SSD for car 2 enough to prevent Collision?…
A:
Q: Two cars in opposite directions are moving towards each other at a speed of 90kph. The total…
A:
Q: What is the safe maximum speed without tipping or skidding for a 13,200 N automobile running around…
A:
Q: The velocities of commuter trains A and B are as shown. Knowing that the speed of each train is…
A:
Q: Calculate the minimum sight distance required to avoid a head-on collision of two cars approaching…
A: Given :
Q: Determine the maximum constant speed at which the 2-Mg car can travel over the crest of the hill at…
A: To find the maximum speed-
Q: The car acceleration takes the form du/dt = 1.2 -0.06u where u is the vehicle speed in meter per…
A:
Q: Current Attempt in Progress Car A is traveling at a location where the speed limit is 100 km/h. The…
A:
Q: Determine the maximum speed for each car if the normal acceleration is limited to 0.88g. The roadway…
A: normal acceleration a = 0.88 g = 0.88*9.81…
Q: A bowling ball is dropped from a boat so that it strikes the surface of a lake with a speed of 15…
A: The given data is shown below:
Q: The breaks are set on a train running at 30 mi/hr., when ½ miles from a station. The train slows…
A: Solution Given Data Train speed u= 30 mi/hr Distance travel s= 1/2 miles
Q: A van is driven at 60 km/h and is brought to a full stop with constant deceleration in 7seconds. If…
A:
Q: Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver…
A: Given data, Speed of both cars A & B, V = 60 ft/s Reaction time for both cars A & B, t =…
Q: stopped in a distance of 16.1m. if the coefficient of friction between the tires and the road
A: Given data - Velocity (V) = 50km/hr = 50×(5/18) = 13.88m/s Braking distance = 16.1 m Coefficient of…
Q: A monorail train starts from rest on a curve of radius 400 m and accelerates at the constant rate…
A: Given: Radius of curve, ρ = 400m, v = 72km/h= 20 m/s
Q: Two Cars A and B are approaching each other in adjacent highway lanes. At t= 0,A and B are 1.25 km…
A: Given : Speed of car A, VA = 120 km/h = 120×10003600 = 33.33 m/secSpeed of car B, VB = 72 km/h =…
Q: Q2/ A track traveling at 25mph is approaching a stop sign. At time to and a distance of 60 ft the…
A: Given that: Speed of track =25 mphDeceleration of track = 14 ft/sec2
Q: A Hyundai Santa Fe travels a 1.30km levelled road from Bonifacio roundabout to City Lights Hotel in…
A: Speed is the time rate at that a car is moving along a direction, while velocity is the rate and…
Q: subway Q3/A subway traveling at 40 km/hr decelerates as it reaches point A and slows down with a…
A: Constant acceleration(a)=595.74km/hr2 Velocity of car(v)= 46.62km/hr
Q: 1. A driver is travelling at 50 mph is 80 m from a wall ahead, if the driver applies the brake…
A:
Q: coefficient of friction of a car initially travelling at 150 kph is 0.47. What should the downgrade…
A:
Q: A driver driving at 69 kph at a straight flat portion of the highway suddenly encounters an…
A:
Q: A car is traveling at 15 m/s, when the traffic light 60 m ahead turns yellow. If the car…
A:
Q: A driver travelling at 50mph sees a hazard at a certain distance ahead. The driver then applies the…
A: The driver sees the hazard and takes 2 second to apply the brake. So till then the vehicle moves…
Q: 2. A driver traveling at 70 kph sees a stalled car 30 m ahead. If the driver applies the brakes…
A:
Q: A car is traveling at 76 mi/hr down a 3% grade on poor, wet pavement. The car's braking efficiency…
A: The given data is shown below: Speed=76 mi/hrGrade=3%Braking efficiency=90%Frl=0.015
Q: Highway Engineering: A car with a speed of 50 mph will pass the bus with a speed of 40 mph.…
A: Given data, Velocity of car u = 50 mph Acceleration a = 2.25 km/hr/sec = 1.4 mph/s Time of initial…
Q: Q2/ A track traveling at 25mph is approaching a stop sign. At time to and a distance of 60 ft the…
A:
Q: A car having a speed of 90 kph overtakes a tricycle having a speed of 80kph. The time of the initial…
A: Appreciate if there is detailed work with explanation and finds you helpful for ease of…
Q: 66-kph A 48-kph 30°
A:
Q: Determine the maximum operating speed of a train in mph when its running on a curve with 150m radius…
A: tanθ+F=v2gR Take f=0.15 tan 6°=0.105=v2gR V=✓0.105×gR V=✓(0105×9.81×150) V=12.43m/s
Q: A truck travels along a straight, level road at the speed of 76ft/sec. when the driver is forced to…
A:
Q: Calculate the safe stopping sight distance for design speed of 80 kmph for: (i) Two-way traffic on a…
A:
Q: On a certain stretch of a track, trains run at 96.56 kph. How far back of a stopped train should be…
A:
Q: Two cars,on a level surface, are approaching each other from the opposite directions at a speed of…
A:
Q: Find the minimum sight distance to avoid head-on collision of two cars approaching at 90 kmph and 60…
A:
Q: Two trains travel on parallel tracks in the same direction. The leading train has a length of 180m…
A:
Q: Q-1 A driver is travelling at A km/h and saw a parked truck on the road (grade is B%) about 160 m…
A: Stopping sight distance: The sufficient length available to stop a vehicle that is travelling at a…
Step by step
Solved in 2 steps with 2 images
- on a certrain stretch of track, trains run at 60kph. how far back of a stopped train should a warning torpedo be plaed to signal an on coming train in meters? asssume that the brakes are applied at once and retard the train at a uniform rate of 2 ft/s^2.A car running at 80kph saw an oil truck in an accident 250 meters away. At the same time the truck is spilling oil causing a 60% reduction of friction. If initial f=0.30 a) will the car hit the obstruction? b) assuming that the tires would be replaced in such a way that the f=0.70, how much distance will the car have away from the obstruction? c) If the obstruction is 120m away and the oil did not spill, what would have been a safe speed at which the car will not hit the obstruction from 10m away assume f=0.3A truck travels along a straight, level road at the speed of 76ft/sec. when the driver is forced to apply the breaks to avoid an accident. If the truck undergoes a constant deceleration of 6ft/sec2, how far does the truck travel before coming to a complete stop?
- A 15-ft-long, 6-ft-high rectangular tank open to the atmosphere is towed by a truck on a level road. The tank is filled with water to a depth of 5 ft. Determine the maximum acceleration or deceleration allowed if no water is to spill during towing. a)4.29 b)7.02 c)6.45 d)5.2eA subway train stop at two stations that are 2km apart. The maximum acceleration and deceleration of the train are 2m/s² and 1.6m/s² respectively, and the maximum allowable speed is 20m/s. determine the shortest possible time of travel between 2 stationsA train starts from rest at station A and accelerates at 0.5m/s2 for 60 sec. Afterwards it travels with a constant velocity for 15 min. It then decelerates at 1m/s2 until it is brought to rest at station B. Determine the distance between the stations.
- A car is traveling at 76 mi/hr down a 3% grade on poor, wet pavement. The car's braking efficiency is 90%. The brakes were applied 320 ft before impacting an object. The car had an antilock braking system, but the system failed 200ft after the brakes had been applied (wheels locked). What speed was the car traveling at just before it impacted the object? (Assume theoretical stopping distance, ignore air resistance, and let Frl=0.015)A driver is driving at 75 kph when a dog suddenly appeared and stopped at the middle of the road. Determine the distance the vehicle would move before the driver could activate the brakes. Assume PRT is 2.50 secs. If the friction factor is 0.30 and brake efficiency is 45%, determine the braking distance. If the vehicle is 250 m away when the driver sees the dog, will the dog be hit by the vehicle?A driver travelling at 50mph sees a hazard at a certain distance ahead. The driver then applies the brakes immediately, time is 2sec and begins slowing the vehicle at 10m/s^2. If the distance from the stopping point to avoid hitting the boulder is 10.28m, how far the car from the hazard upon perception.
- A driver driving at 69 kph at a straight flat portion of the highway suddenly encounters an obstruction. He applies his brakes. If the coefficient of friction of the roadway to the tires is equal to 0.5, calculate the maximum safe distance (rounded to the nearest meters) the driver can apply his brakes to avoid collision. g = 9.81 m/s^2The velocities of commuter trains A and B are as shown. Knowing that the speed of each train is constant and that B reaches the crossing 3 min after A passed through the same crossing, determine the distance between the fronts of the engines 10 min after A passed through the crossing (Answer in whole number of a meter).A car starts from rest and travels 10 sec. with an acceleration of a = 4 – 0.3t, then runs for 30 sec. at constant velocity and finally comes to rest by decelerating at 3.125 m/s2. Determine the velocity of the car after 10 sec. Determine the distance traveled by the car during the period of 10 sec. c. Determine the total distance traveled by the car until it stops.