• Question 1Hennessey Venom F5, one of theworld's fastest car today is able toreach top speed at 480 kph during atest drive. If the coefficient of frictionon the straight horizontal race track is0.6, at what distance from thestopping point did he applied hisbrakes?Question 2Calculate the modulus ofelasticity of the subgrade in MPa, ifthe modulus of elasticity of thepavement is 2900 MPa and thestiffness factor is 0.549.

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Answered: Question 1 Hennessey Venom F5, one of…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Two bumper cars at the county fair are sliding toward one another (see figure below). Initially, bumper car 1 is traveling to the east at 5.70 m/s, and bumper car 2 is traveling 78.2° south of west at 4.20 m/s. They collide and stick together, as the driver of one car reaches out and grabs hold of the other driver. The two bumper cars move off together after the collision, and friction is negligible between the cars and the ground. W-O>E Car 2 Car 1 Vii (a) If the masses of bumper cars 1 and 2 are 596 kg and 625 kg respectively, what is the velocity of the bumper cars immediately after the collision? magnitude m/s direction ° east of south (b) What is the kinetic energy lost in the collision?
The 19-Mg truck drives onto the 278-Mg barge from the dock at 25 km/h and brakes to stop on the deck. The barge is free to move in the water, which offers negligible resistance to motion at low speeds. Calculate the speed of the barge after the truck has come to rest on it. 25 km/h 278 Mg 19 Mg Answer: v = i km/h
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Solve the problem completely. Support your solutions with diagrams. No short-cut in your solution
1. A Honda Civic is driven at 50 kph for 12 min, then at 40 kph for 20 min, and finally at 50 kph for 8 min. a. Calculate the average speed over the interval. (in kph) b. How fast must the Honda Civic move in the last 8 min of travel to obtain an average speed of 55 kph? (in kph)
John starts on a walk from his house at 9 AM. He reaches his destination 4.5 km away from his house at 10:00 AM. What was John’s average speed? A. 0.5 kph B. 0.43 kph C. 3 kph D. 4.5 kph
In a certain situation it was estimated that 25% of the braking force was applied to the rear brakes in order for the car to develop the maximum forces required stop the car. If the total braking force developed was 5000 N and the road is wet (u = 0.52), wheel base of 290 cm and a center of gravity 64 cm above the pavement and 120 cm behind the front axle. Determine the weight of the vehicle (N).
A 1500 kg automobile that has 2 m of frontal area is driven on a surface and the coefficient of rolling friction is 0.0015 for all speeds. Assuming minimum theoretical stopping distances, if the vehicle comes to a stop 76 m after brake application on a level surface and has braking efficiency of 0.75. what is its initial speed a) if aerodynamic resistance is considered and b) if aerodynamic resistance is ignored? Note: g-9.81 m/s? matin. The roadway is wet with good pavement. > The automobile is traveling at an elevation of 1500 m.
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?
An driver (t₁=1 sec) used brakes to avoid an accident when suddenly a person steps from behind parked car in the path of driver at distance 35m. can the drivers avoids the accident if he drive at velocity of: 45 km/hr, 55km/hr, 65 km/hr, 75 km/hr? (F= 0.45).
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.
Two drivers each have a reaction time of 2.5 seconds. One is obeying a 90 km/h speed limit, and the other is travelling illegally at 108 km/h. How much distance will each of the drivers cover while perceiving/reaction to the need to stop, and what will the total stopping distance be for each driver (using practical stopping distance and assuming roadway grade g = -2.5%). Longitudinal friction coefficient (fi) can be calculated by the equation f = 1.0371 V-0.2729 where V vehicle speed in km/h.|

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Question 1 Hennessey Venom F5, one of the world's fastest car today is able to reach top speed at 480 kph during a test drive. If the coefficient of friction on the straight horizontal race track is 0.6, at what distance from the stopping point did he applied his brakes?