Chapter 12, Problem 18P

60 ft/s Car A starts from rest at t = 0 and travels along a straight road with a constant acceleration of 4 ft/s2 until it reaches a speed of 70 ft/s. Afterwards it maintains this speed. Also, whent = 0, car B located 6000 ft down the road is traveling towards A at a constant speed of 60 ft/s. Determine the distance traveled by car A when they pass B 6000 ft- each other.

Car A starts from rest at t =0 and travels along a straight road with a constant acceleration of 8 ft/s2 until it reaches a speed of 80 ft/s. Afterwards it maintains this speed. Also, when t =0, car B located 8000 ft down the road is traveling towards car A at a constant speed of 60 ft/s. Determine the distance travelled by car A when they pass each other. A.3,600 ft                          B.4,400 ft C. 5,600 ft                          D. None of these

Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P observes this speed via radar. The driver of car A is traveling at va = 128 km/h as it passes P, but over the next 4.1 seconds, the car uniformly decelerates to the speed limit of 100 km/h, and after that the speed limit is maintained. At the moment when A passes P, the police car begins to accelerate at the constant rate of 4.2 m/s² until a speed of 157 km/h is achieved, and that speed is then maintained. Determine the distance s required for the police officer to overtake car A. UA P Answer: s = i m