Please help 12-17. Car B is traveling a distance d ahead of car A. Both cars...
Please help
12-17. Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B suddenly applies the brakes, causing his car to decelerate at 12 ft/s. It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes, I dece lerates at 15 ft/s. Determine the minimum distance d be tween the cars so as to...
U of Wyoming Dynamics, ES 2120-01, Fall 2018 Problem 12.17 Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B Determine the minimum distance d between the cars so as to avoid a collision. at 8 ft/s2 It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes, he decelerates at 16 ft/s2 Figure...
Tests reveal that a normal driver takes about 0.75 s before he or she can react to a situation toavoid a collision. It takes about 3 s for a driver having 0.1% alcohol in his or her system to dothe same. If such drivers are traveling on straight road at 50 km/h and their cars can decelerateat 0.6 m/s2, determine the shortest stopping distance d for each of these drivers from themoment they see the pedestrians. Moral: If you must...
The speed limit in a school zone is 45 km/h. A driver traveling at this speed sees a child run onto the road 20 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 11.0 m/s2. If the driver's reaction time is 0.55 s, will the car stop before hitting the child?What is the stopping distance of the vehicle?
Two cars are traveling along a straight line in the same direction, the lead car at 25.7m/s and the other car at 29.2m/s. At the moment the cars are 39.7m apart, the lead driver applies the brakes, causing her car to have an acceleration of -1.99m/s2. How long does it take for the lead car to stop? What is the distance it travels during this time? Assuming that the chasing car brakes at the same time as the lead car,...
Two cars are traveling along a straight line in the same direction, the lead car at 25.7m/s and the other car at 29.2m/s. At the moment the cars are 39.7m apart, the lead driver applies the brakes, causing her car to have an acceleration of -1.99m/s2. How long does it take for the lead car to stop? 1.29×101 s What is the distance it travels during this time? 1.66×102 m Assuming that the chasing car brakes at the same time...
Tests reveal that a normal driver takes about 0.75 s before he or she can react to a situation to avoid a collision. It takes about 3 s for a driver having 0.1% alcohol in his system to do the same.(Figure 1). Figure < 1 of 1 > - 44 ft/s - Pai Review Part A If such drivers are traveling on a straight road at 30 mph (44 ft/s) and their cars can decelerate at 20 ft/s, determine the...
Two cars are traveling along a straight-line in the same direction, the lead car at 25.0 m/s and the other car at 36.0 m/s. At the moment the cars are 40.0 m apart, the lead driver applies the brakes, causing his car to have an acceleration of -1.80 m/s2. (a) How long does it take for the lead car to stop? (b) Assuming that the chasing car brakes at the same time as the lead car, what must be the...
wo cars are traveling along a straight line in the same
direction, the lead car at 25.7m/s and the other car at 29.2m/s. At
the moment the cars are 39.7m apart, the lead driver applies the
brakes, causing her car to have an acceleration of -1.99m/s2. How
long does it take for the lead car to stop? 1.29×101 s right
What is the distance it travels during this time? 1.66×102 m
right
Assuming that the chasing car brakes at the...
The driver of a 1.19 103 kg car traveling on the interstate at 35.0 m/s (nearly 80.0 mph) slams on his brakes to avoid hitting a second vehicle in front of him, which had come to rest because of congestion ahead. After the brakes are applied, a constant kinetic friction force of magnitude 7.96 103 N acts on the car. Ignore air resistance. (a) At what minimum distance should the brakes be applied to avoid a collision with the other...