3. A pick up truck that is 5000kg is moving at 5m/s East and it collided with a 20000kg car moving at 30m/s in a direction 30degrees South of West. After collision, the two vehicles remained tangled together. With what speed and in what direction does the wreckage begin to move?
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- A Ford Everest skidded into a intersection of Maharlika Highway and Circumferential Road and struck a bystander and continued until it hit one of the electrical post of the highway. Based on the damage to the front of the Everest, the police report estimated that the car was doing 8 kph at the moment of impact on the electrical post. The length of the skid marks was recorded to be 40 m. The road has down hill grade of 5% A test car skidded 14 m. on the same section of the road when the brake is applied from a speed of 40 kph to the halt. Determine the probable speed of the car involved in the accident when the brakes where applied in kph?9) The driver of an automobile moving with the velocity of 90 km/h on a 4% graded descendinghighway section decides to overtake the bus moving with a velocity of 70 km/h despite theapproaching truck with a velocity of 50 km/h on the opposite direction.a) What should be the minimum distance between the automobile and the truck at thebeginning of the overtaking for safe manouevre ?b) If the truck has to stop op the highway, what is the upper and the lower limit of the tractionforce that must be diverted to its wheels in order to restart moving ?Given: di=8+0,2.Vi; pavement sliding coefficient, f=0,40; t = 0,020; the mass of the truck = 12ton, Qm=2/3.QThe flatbed truck is traveling at the constant speed of 61 km/h up the 0.0012% grade. The final 123kg crate to be delivered was shoved to the back of the truck, resulting in an initial relative velocity of around 3.17m/sec towards the back of the truck. If the crate slides a distance of 2.4 m measured on the truck bed before coming to rest on the bed. 1.) Calculate the block's acceleration. Hint: Grade(%) = tanϴ 2.) Calculate the kinetic friction coefficient between the crate and the truck. 3.) How long did it take the crate to cover a 2-meter distance?
- 3-19 The radius of a horizontal curve on an existing highway was field-measured to be 243 m. The pavement on this two-lane highway is 6.6 m wide, and the elevation difference between the inside and outside of the curve is 0.43 m. The posted speed limit on the road is 96 km/h. Is this a hazardous location? If so, why? What action will you recommend to correct the situation?Question 5a) As the Area Engineer of Ghana Highway Authority, a lot a complains from drivers and passengers have come to you concerning an uncomfortable weight loss sensation usually experienced at a particular sag curve. You have therefore been tasked to redesign this sag curve to eliminate the weight loss sensation. How would you achieve this objective?- What are the major reasons for accidents at curved highway?
- **Please draw all necessary diagrams showing shockwaves.** Due to a road crash, the southbound direction of a 2-lane, 2-way highway was completely closed. Before the event, vehicles were running at 40 kph with density of 20 vpk. It took 35 minutes before the road got cleared again due to road crash investigation, waiting for emergency response team, and clearing of debris. The traffic stream follows Greenshield's model with free flow speed of 50 kph and jam density of 90 vpk. a.) Draw all necessary diagrams showing shockwaves.A 900-kg car travelling east at 15.0 m/s collides with a 750-kg car travelling north at 20.0 m/s The cars stick together. Assume that any other unbalanced forces are negligible What is the change in momentum of the colliding bodies? What is the speed of the wreckage just after the collision? In what direction does the wreckage move just after the collision?A Pajero intercooler skidded into an intersection of Magsaysay Avenue and Quirino Avenue and stuck a bystander and continued until it hit one of the column support of the skyway. Based on the damage to the front of the car, the police report estimated that the car was doing 8 kph at the moment the impact on the column support. The length of the skidmarks was recorded to be 40m. The road has a downhill grade of -5%. A test car skidded 14m on the same section of the road when the brake is applie from a speed of 40 kph to the halt. Determine the probable speed of the car involved in the accident when the brakes were applied in kph.
- A six lane highway (three 12-ft lanes in cach direction) has a superelevation of 6%, and a design speed of 60 mph. a) What radius should be used for the design of the roadway? b) If an obstruction is 12ft from the roadway edge, what SSD is available? c) Is there enough SSD available? If not, what should it be? Answer 10a: Answer 10b: Answer 10c:The 2 southbound lanes of a four-lane (i.e. 2 lanes each direction) urban freeway are 12 ft wide. There is at least 6 ft of lateral clearance on the right side of the outer/right lane. There are two ramps within the influence area (i.e. within 3 miles upstream and 3 miles downstream of the center of the segment. What is the estimated FFS (mph)? Provide the answer to the nearest tenths. Response Feedback: The BFFS of 75.4 mph is reduced by 1.28 mph to account for the presence of ramps.Accident Reconstruction, given information: Average Skid Mark = 47 feet • Crash damage indicates 30 mph speed at impact %3D • f = 0.65 • level roadway • 40 mph posted speed What is the initial speed of the vehicle?