Car A is parked along the northbound lane of a highway, and car B is traveling in the southbound lane at a constant speed of 60 mi/h. At t = 0, A starts and accelerates at a constant rate aA, while at t = 5 s, B begins to slow down with a constant deceleration of magnitude aA/6. Knowing that when the cars pass each other x = 294 ft and vA = vB, determine (a) the acceleration aA, (b) when the vehicles pass each other, (c) the distance d between the vehicles at t = 0.
Car A is parked along the northbound lane of a highway, and car B is traveling...
A car in the left lane of a highway is trying to pass a truck in the right lane. The front of the car is initially 70.0 m behind the front of the truck. The car moves at a constant speed of 65.0 km/h, while the truck moves at a constant speed of 20.0 km/h. How long (in s) does it take the car to overtake the truck (that is, for the front of the car and the front of...
Principles of transportation engineering The volume at a section of two lane highway is 1500 veh/h... DONT FORGET PART B 3. (10 pts) The volume at a section of a two-lane highway is 1500 veh/h in each direction and the density is about 25 veh/mi. A large dump truck is loaded with soil from an adjacent construction site joins the traffic stream and travels at a speed of 10 mi/h for a length of 2.5 mi along the upgrade before...
The driver of a car traveling on the highway suddenly slams on the brakes because of a slowdown in traffic ahead. A) If the car’s speed decreases at a constant rate from 74 mi/h to 50 mi/h in 3.0 s, what is the magnitude of its acceleration, assuming that it continues to move in a straight line? Answer is in mi/h^2 B) What distance does the car travel during the braking period? Answer is in ft
How long does it take an automobile traveling in the left lane of a highway at 60.0 km/h to overtake (become even with) another car that is traveling in the right lane at 20.0 km/h when the cars' front bumpers are initially 75 m apart?
Car A was traveling east at high speed when it collided at point with car B, which was traveling north at 46 mi/h. Car C, which was traveling west at 61 mi/h, was 32 ft east and 10 ft north of point at the time of the collision. Because the pavement was wet, the driver of car C could not prevent his car from sliding into the other two cars, and the three cars, stuck together, kept sliding until they...
Answer all questions 2. A car is traveling along a highway, and one of the passengers takes the time that the car takes to travel a distance of 30 meters. If the car took 2 minutes to travel 30 meters, what is the velocity of the car at the end of the 30 meters? 3. On a separate sheet of paper create a rough sketch of what the displacement vs. time graph would look like if the car rested for...
A car is traveling north along a straight road with a constant speed of 11.2 m/s. In order to pass through an intersection before the traffic light turns red, the driver accelerates forward with a constant magnitude of 2.25 m/s2 for 3.70 s. A)What is v0? B) What is a? C)What is t? D) What is the velocity of the car at the end of the acceleration? E)What is the position of the car at the end of the acceleration?...
11.78 A car is traveling at a constant speed of 54 km/h when its driver sees a child run into the road. The driver applies her brakes until the child returns to the sidewalk and then accelerates to resume her original speed of 54 km/h; the acceleration record of the car is shown in the figure. Assuming x = 0) when t = 0, determine (a) the time t, at which the velocity is again 54 km/h, (b) the position...
Please show work 3. A car traveling at a constant 39 m/s (-87 mph) passes a police car that is initially traveling at 25 m/s (55 mph). At the instant of the pass, the police car accelerates at a constant rate of 3.3 m/s in pursuit. We wish to find how much time elapses before the officer catches the car. (a) Identify the initial states when the car passes the police. (b) Define the final state or conditions which enable...
Can someone help me with number 2. Thank you . A van traveling 60 mi/hr sees a duck in the distance and slams on its brakes. If the duck is exactly 3 feet away when the van begins braking, how quickly must it accelerate in order to save c. A duck on a motorcycle is speeding down the highway at 65 mi/hr where the speed limit is 00 the duck? only 55 mi/hr. It passes a police car on the...