A vehicle was moving with tractive force of 70 kN and then turned on curve having turning angle 60°. The percentage of tractive force lost due to turning will be

A traffic stream is moving at a steady state when entering a mountain grade. Upon entering the grade, the speed, density and flow are 72 km/h, 25 veh/km and 1800 veh/hr respectively. On the grade, a truck drops to a speed of 15 km/h causing traffic to bunch up to a density of 85 veh/km. When the truck pulls over, traffic accelerates to the maximum flow until steady state flow conditions resume. Calculate (a) the flow of traffic behind the truck on the mountain grade (b) the jam density and free flow speed for this road (c) the density and speed when traffic resumes a steady state flow (d) the maximum flow

A car is traveling at a speed of 100 ft/s which accelerates 12 ft/s2. The perception reaction time for the driver is 2.40 s. If the maximum grade of the road is -3.7%, compute the following: a. Braking distance in meters b. Lag distance in meters

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A 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 4200 lb. automobile is traveling on a curve having a radius of 900 ft. If the acceleration of the automobile is 6 ft/s2, determine the constant speed in mph at which the automobile is travelling. a) 45 b50 c) 66 Od) 75 e) 81

The car is traveling at a speed of 77 mi/hr as it approaches point A. Beginning at A, the car decelerates at a constant 7.1 ft/sec2 until it gets to point B, after which its constant rate of decrease of speed is 2.3 ft/sec as it rounds the interchange ramp. Determine the magnitude of the total car acceleration (a) just before it gets to B, (b) just after it passes B, and (c) at point C. 220 B 372' Answers: (a) Just before B, a = ft/sec? (b) Just after B, a = ft/sec2 (c) At C, ft/sec2 =

The rated speed of a highway curve of 60m. radius is 50Kph. 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?