Q1) While a car is moving with a speed 108 on a straight road the driver sees a truck which enters the road 75mahead. The driver applies full brake 0.5s after s/he observes the truck, however the car hits the truck with a speed of50. Then what would be the maximum initial speed of car in when the driver observes the truck in order thatthe car does not hit the truck with all other conditions are the same?

Consider the free body diagram Given Car speed=180km/h V1=108km/h=108×518V1=30m/s In 0.5 sec car…

Answered: Q1) While a car is moving with a speed…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter3: Characteristics Of The Driver, The Pedestrian, The Bicyclist, The Vehicle, and The Road

Section: Chapter Questions

Problem 10P

See similar textbooks

Similar questions

9.An alert driver (with a reaction time 0.5 second) is driving uphill on a 4% grade at 36 km/h on a dry pavement when suddenly a person steps from behind a parked car in the path of the driver. The coefficient of friction of the pavement is 0.7. How long is the stopping distance of the car? A. 12.73m B. 11.89m C. 21.86m D. 20.24m
A vehicle is moving along a straight line having an initial speed of 10 m/s. It is experiencing a deceleration of -0.5v2 m/s2 . Determine the distance travelled by the vehicle after three seconds.
A motorist is traveling at v0 = 64 km/h when she observes that a traffic light x = 327m ahead of her turns red. The traffic light is timed to stay red for 27s. If the motorist wishes to pass the light without stopping just as it turns green again, determine (a) the required uniform deceleration of the car and (b) the speed of the car as it passes the light.
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=0.3
6. A car starts from rest and has a constant acceleration of 3ft/s2. Find the average velocity during the first 10 seconds of motion.
An impatient car driver stuck behind a slow-moving truck traveling at 25 mi/h decides to overtake the truck. The accelerating characteristic of the car is given by: dv/dt=3-0.05v where v is the speed (ft/sec) and t is the time (0sec).What is the acceleration in meter per second after 25 seconds?
The brakes of a car are applied, causing it to slow down at a rate of 10 ft/s2. Knowing that the car stops 300 ft, determine (a) how fast the car was traveling immediately before brakes were applied, (b) the time required for the car to stop.
In some applications dealing with very high speeds, the velocity is measuredin mm/µs. Convert 25 mm/µs into (a) m/s; and (b) mi/h.
The acceleration of a car is given by a= | (3t^3 + 4t)i+ 6tj + (8t - 5) k] m/s^2. Determine the magnitude of its velocity when t = 3s. When t O s, vx = 2 m/s, vy = 3 m/s and vz =5 m/s
speed of 35 m/s. If the brakes are applied and the speed of the car is reduced to 10 mls in 15 s, determine the constant deceleration of the car
The driver of a car travelling at a certain speed suddenly sees an obstruction ahead and travelled a distance of 55.8 m during the perception time of 1.45 sec. Determine the car's speed of approach in kph a.136.54 kph b.140.54 kph c.138.54 kph d.138.00 kph
Three seconds after automobile B passes through the intersection shown, automobile A passes through the same intersection. Knowing that the speed of each automobile is constant, determine (a) the relative velocity of B with respect to A, (b) the change in position of B with respect to A during a 4-s interval, (c) the distance between the two automobiles 2 s after A has passed through the intersection.

SEE MORE QUESTIONS

Recommended textbooks for you

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS