subject
Physics, 04.07.2019 23:30 anayajhughes0603

As a city planner, you receive complaints from local residents about the safety of nearby roads and streets. one complaint concerns a stop sign at the corner of pine street and 1st street. residents complain that the speed limit in the area (89 km/h) is too high to allow vehicles to stop in time. under normal conditions this is not a problem, but when fog rolls in visibility can reduce to only 47 meters. because fog is a common occurrence in this region, you decide to investigate. the state highway department states that the effective coefficient of friction between a rolling wheel and asphalt ranges between 0.842 and 0.941, whereas the effective coefficient of friction between a skidding (locked) wheel and asphalt ranges between 0.550 and 0.754. vehicles of all types travel on the road, from small cars with a mass of 523 kg to large trucks with a mass of 3927 kg. considering that some drivers will brake properly when slowing down and others will skid to stop, calculate the minimum and maximum braking distance needed to ensure that all vehicles traveling at the posted speed limit can stop before reaching the intersection maximum minimum m m given that the goal is to allow all vehicles to come safely to a stop before reaching the intersection, calculate the maximum desired speed limit km/h maximum speed limit: which of the choices affect the soundness of your decision? precipitation from the fog can lower the coefficients of friction. drivers cannot be expected to obey the posted speed limit ] reaction time of the drivers is not taken into account newton's second law does not apply to this situation.

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 11:50
Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
Answers: 2
question
Physics, 22.06.2019 17:40
The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
Answers: 3
question
Physics, 23.06.2019 03:00
The basketball coach tells his team to run sprints back and forth across the court, which is 30 m long. they start at the left end of the court, run back and forth 6 times, then end back at the left end of the court where they began. what distance did they run? what is their displacement?
Answers: 1
question
Physics, 23.06.2019 03:30
Select the correct lewis structure for fluorine which is group 7a element?
Answers: 1
You know the right answer?
As a city planner, you receive complaints from local residents about the safety of nearby roads and...
Questions
question
Social Studies, 28.01.2020 16:56
question
Social Studies, 28.01.2020 16:56
Questions on the website: 13722362