You are driving a passenger vehicle traveling 65 mi/h on a non-treated section of US-460 Bypassaround Blacksburg on a sunny day. Assume a braking efficiency of 100%.A. If you apply the brakes and come to a complete stop, what is the theoretical stoppingdistance, the practical stopping distance if you use the AASHTO recommended decelerationrate, and the difference between the two?B. What is the practical stopping sight distance if you include the AASHTO recommendedperception/reaction time?C. As a young driver, your perception/reaction time is close to 1 second if you are payingattention. How much of a safety factor (ie how many feet) do you have between your actual(theoretical) stopping distance using 1 sec, and the practical stopping distance from part B?

Answered: Image /qna-images/answer/34b85b35-16da-43c9-bdb2-9ea32f85cb2a.jpg

Answered: You are driving a passenger vehicle…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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a. How much horsepower does a 25 W household lightbulb consume? (Express your answer using four significant figures.) 25 W =| hp b. How much kW does a 12 hp lawn mower engine produce? (Express your answer using four significant figures.) 12 hp = kW
Each time he does one pushup, Jose, who has a mass of 75 kg, raises his center of mass by 25 cm. He completes an impressive 150 pushups in 5 minutes, exercising at a steady rate. a. If we assume that lowering his body has no energetic cost, what is his metabolic power during this workout? b. In fact, it costs Jose a certain amount of energy to lower his body—about half of what it costs to raise it. If you include this in your calculation, what is his metabolic power?
A student is riding a bicycle at a constant speed of 4.36 m/s on a level road. The mass of the student and bicycle together is 76.5 kg. Assume the friction and drag is 40.6 N. What is the student's metabolic power, in Watts? Use g = 10.0 m/s2.
Question has TWO parts Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Part A - A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic energy, in kJ (kiloJoules)? Part B - A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic power, in kW (kiloWatts)?
In recent years, there has been a large push for an increase in the use of renewable resources to produce the energy we need to power our vehicles. One of the newer fuels that has become more widely available is E85, a mixture of 85% ethanol and 15% gasoline. Despite being more environmentally friendly, one of the potential drawbacks of E85 fuel is that it produces less energy than conventional gasoline. Assume a car gets 27.5 mi gal using gasoline at $3.50/gal and 21.5 mi gal using E85 at $2.85/gal. How much will it cost to drive 700. miles using conventional gasoline fuel? How much will it cost to drive 700. miles using E85 fuel?
A 1200kg car travelling at 15m/s experiences an air resistance of 5000N and road friction of 7500N. A.) what is the car's speed in m/s?
A coal power plant has a rated output of 150 MW and a first law efficiency of 41%. Coal has an energy density of 24 MJ/kg. How many metric tons of coal are wasted by the power plant per hour while running at full capacity (that is, how much of the coal that was burned did not actually contribute to generating electricity)? Express your answer in metric tons of coal.
In raising a 5000-N piano with a pulley system, the workers note that for every 3 m of rope pulled down, the piano rises .3 m. a) Ideally, how much force is required to lift the piano? b). If the workers actually pull with 750-N, what is the efficiency of the pulley system?
An object that measured a mass of 0.89 kg started moving at a speed of 3.89 m/s. After some time, the speed increased to 6.25 m/s. What was the kinetic energy when the object reached the higher speed? b. What was the net work done by the object?
Don't give handwritten solution and don't copy other's content.
In a downhill ski race, your final velocity is not affected very much by getting a running start, because the initial kinetic energy is compared with the gain in gravitational potential energy on even small hillsHowever, you will finish the race much faster (which is more important ) To demonstrate this, find the final speed and the time taken for a skier who skies 82.5 m along a slope that is 19 degrees measured from horizontal , in the following situations (you may neglect friction ) A find the final speed in m/s lf the skier starting from rest B how long (in s) does it take for the skier to reach the bottom of this hill starting from rest C find the final speed in (m/s) of the skier with speed of 2.50 m/s D how long in (s) does it take for the skier to reach the bottom of this hill with a starting speed of 2.50 m/s
answer c only. Please explain work in detail.

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