and more. What steps do you follow when backing up? b) right-of-way incandescent light c) perfect condition vehicle The sequence of traffic lights from top to bottom is: Many of today's automobiles come equipped with automatic: Vehicle acceleration will produce a weight shift of: When the vehicle is stopped or traveling at a constant speed the suspension load is: First gear in a vehicle with a manual transmission should be used for speeds up to approximately: Regulatory signs that have a red circle with a red slash indicate to you: Prior to starting the engine, always place your foot on the: You should always change your oil every 3,000 miles. If the driver is distracted and has a longer than average reaction time, then he or she may hit Sam without having applied the brakes at all. The figure of 1.5 seconds is the reaction time of average drivers. Using data from actual road crashes, scientists at the University of Adelaide estimated the relative risk of a car becoming involved in a casualty crasha car crash in which people are killed or hospitalisedfor cars travelling at or above 60 km/h. 3.) a) 15 to 25 mph Season it first to help achieve a brown color. Two. and a wall thickness of 0.5in0.5 \mathrm{in}0.5in. hSmO0+41;*vh+0cI6"M.EX=w a) to the side is real.] d) none of the above is correct, When you park and leave a manual shift vehicle, it is best to set the parking brake and shift to: @j@i5`j_1,z%L]tmbj;#PWmCz>zwo[tygYYt_1xrn[yZ|8JJ \FL% 7 ]o5Q>'%+gy Under most conditions a minimum following interval of _____ will enable you to adjust speed or position appropriately, If a vehicle speed doubles from 20 mph to 40 mph, distance needed to stop the vehicle increases by ____ times. How often should the pre-driving checks identified for approaching the vehicle, outside the vehicle and inside the vehicle be performed? Traveling speed- you must maintain a constant traveling speed to prevent risk while driving uphill or downhill. If you double your speed, your braking distance will become four times longer. What therapeutic measures can be done to help J.J. during your shift this afternoon? The muscles of an runner transform chemical potential energy to ________. When starting the engine, when should you release the key? c) away from the curb This questions appears in the following tests: %%EOF This force creates a problem when a driver change is a vehicles direction to suddenly. Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page. Car B must have an engine providing more force than, a. %PDF-1.6 % Braking distance is a measurement of how far your vehicle travels during the time it takes to come to a complete stop once you hit the brakes. Load 2 is connected in delta, and the phase impedance is 12+j912+j 9 \Omega12+j9. a) public commuting vehicle You can cook chicken in the microwave oven. d) turning, You should always change your oil every 3,000 miles. The pressure gage on a 2.5-m^3 oxygen tank reads 500 kPa. b) you may not cross over it represents gas at intermediate temperatures (300500 K). 0 If slope and frictional resistance are equal, the factor that has most influence on braking distance is initial speed. This piece of information will be important for determining your total stopping distance. a) 300 G{`%;' R7sr~fvgV!;D%gm7QBl_|ZJ":QBYVua2^NWm1zgnS7GSO}}lu%hgO{lZJDJs.Bqj. In a balanced three-phase system, the source has an abc-phase sequence and is connected in delta. At least once a month or as many as the manual recommends. 2. 1030 0 obj <>stream a. What occurs when energy is transferred from one object to another? Once a pedestrian has been hit by a car, the probability of serious injury or death depends strongly on the impact speed. Since we know that Vf will be zero when the car has stopped, this equation can be re-written as: From this we can see that braking distance is proportional to the square of the speedwhich means that it increases considerably as speed increases. motion picture camera Traction is affected by inertia. 4. when braking hard, the weight of the vehicle noticeably shifts ___ . Thinking distance is the amount of time it takes for you to decide to hit the brakes, and then actually hit them. Reducing the impact speed from 60 to 50 kilometres/hour almost halves the likelihood of death, but has relatively little influence on the likelihood of injury, which remains close to 100 per cent. When a vehicle's speed doubles ( for example, from 20 mph to 40 mph), the distance needed to stop the vehicle increases by 4 times. c) .00 to .02 To signal that you're are going to make a right turn, you should: To allow enough distance to stop in response to threatening objects or conditions, you should identify a planned path of travel ____ seconds ahead. As shown below, every time you double your speed, you multiply your braking distance by four. Braking ability- you need to break to stop the vehicle, especially when going downhill; three control of the brakes to avoid collision or risk, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. The driver of Car 1, driving just 5 kilometres/hour above the limit, would not be so lucky: whether Sam had lived or died, the driver would face legal proceedings, a possible jail sentence, and a whole lifetime of guilt. The top of the head restraint should remain adjusted at what point? d) providing feedback, Areas where pedestrian traffic is high include: Some one used Excel to finish the table and used 9.8 m/s/s for g. The KE entries appear to be slightly smaller than the GPE entries. c) daytime running lights d) red, yellow, green, Dashed white pavement lines separating two lanes indicate: List for substances that can reduce traction between a vehicle tires in the roadway. gripping traction. If the car's initial speed was 70 kilometres/hour, the impact velocity would be 45 kilometres/hour, more than fast enough to kill. Ten milliliters of either hexane (density = 0.65 g/mL) or chloroform (density = 1.49 g/mL) were added to a beaker that contained 10 mL of water, forming two layers with water on top. Watch how a vehicles speed changes its braking distance. c) exchanging information b) every so often (at least once a week) Bridges 3. It doubles. Reduce speed to a crawl and stop driving as soon as you can safely do so. The current IAB\mathbf{I}_{A B}IAB in the delta load is 164516 \angle 45^{\circ}1645 A rms. Overall risk of a collision while using a cell phone increases by ____ percent. c) red and green c) perception time Most states have blood-alcohol concentration limits of __________ percent for drivers under age 21. Doubling your vehicle's speed from 20 to 40 mph will multiply its braking distance by four. c) you may not turn left Under normal driving conditions, checks under the hood should be performed how often? b) 4 Melting ice 4. b) .08 to .10 False the ratio of useful work output to total work input is mechanical advantage (T or F) change the direction of a force and multiply the force a pulley system can moving an object that has kinetic energy must be 3 J a 60-N object moves at 1 m/s. This resistance of an object to changing its state of rest or motion is called Novice drivers account for _____ times more crashes than drivers with 5 additional years of experience. What is the large flat muscle that separates the thoracic cavity from the abdominal cavity? You will need four times the distance to stop the vehicle as the speed increases! That makes sense, right? inertia b) less than 5 mph 1007 0 obj <> endobj d) nighttime riding lights, An adequate space margin is one that provides a driver with: Scale the circuit so that all capacitors are exactly 0.01F0.01 \mu \mathrm{F}0.01F. Oxidation, the burning of alcohol, takes place in your: Most people experience dips in energy between approximately midnight and 6 a.m., and again between approximately ____________, during which they are more likely to fall asleep while driving. The tailgate of the truck is closed. : a) four tires b) brakes c) the steering wheel and column d) the clutch and accelerator c The difference of 2.1 metres might seem relatively small, but combined with other factors it could mean the difference between life and death for Sam. Does the cold streaming gas heat up or cool down when it enters the central cloud? What is an Anti-lock braking system(ABS)? a) 1 . When you park and leave a manual shift vehicle, it is best to set the parking brake and shift to: When driving on trips, a good rule-of-thumb is to stop every ____miles or every ____hours and take a break. Four. When approaching you vehicle parked at a curb, what should you do? The impact speed of Car 1 in our example is about 8.2 metres per second, so the impact lasts only about 0.024 seconds. Three. Keep reading! d) all of the above are correct, ___________ is a coming together or blending of vehicles to maintain a smooth, uninterrupted traffic flow. How many minutes does it take the player to read the entire CD? Can atoms of different elements have the same mass number? Based on the paragraph, which of the following is true? A driver who is distracted, for example listening to loud music, using a mobile phone or has drunk alcohol may take as long as 3 seconds to react. \mathrm{~AMP}OPAMP. Three toy cars, each weighing 0.05 kg, roll down ramps with different heights. b) 25 to 35 mph 2. You can ask a new question or browse more science questions. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out. Cars with bull-bars are particularly unfriendly to pedestrians and to other vehicles, since they are designed to protect their own occupants with little regard for others. d) 400. When a car's speed doubles from 20 m/s to 40 m/s KE increase ______ times. The energy stored in a compressed spring. Increasing your vehicle's speed will increase your vehicle's striking power and braking distance. more similar questions The braking distance (the distance a car travels before stopping when the brakes are applied) depends on a number of variables. Calculate the KE of a 2.0 kg ball moving at 2.0 m/s. Speed is still the most common factor in fatal road accidents, accounting for more than half of all road deaths each year. When you are a new driver and practicing turning right or left with good traction and normal conditions, your speed should not exceed: Dashed white pavement lines separating two lanes indicate: Traffic is traveling in the same direction. If a vehicle's speed doubles from 20 mph to 40 mph, the distance needed to stop the vehicle increases by how many times? b) to the front a) 2 b) 3 c) 4 d) 8. c) 4. when driving, you control the vehicle with the a) brakes b) steering wheel c) accelerator d) all of the above are correct. 20 mph: Thinking Distance of 20 feet + Braking Distance of 20 feet = Total Distance of 40 feet. As shown below, every time you double your speed, you multiply your braking distance by four. The kinetic energy of an object changes when which of the following changes? For Car 2, stopping distance is 25 + 13.9 = 38.9 metres. d) both A and C are correct. The force between the tyres and the road increases with increasing speed and with the sharpness of the turn (Force = mass velocity squared, divided by the radius of the turn), increasing the likelihood of an uncontrolled skid. d) 8, First gear in a vehicle with a manual transmission should be used for speeds up to approximately: b) a no passing zone When an energy transformation occurs, which of the following is true? c) 50% of all traffic crashes A supercomputer model of the formation of one of the first stars in the universe. Braking distance is the time it takes for your car to come to a complete stop after you've hit your brakes. a) passing is permitted a) hearing c) approximately 4 seconds 3-4 seconds. 3-4. if a vehicle's speed doubles from 20mph to 40mph, the distance needed to stop the vehicle increases by how many times. If a car's speed doubles, its kinetic energy increases by 4, if its speed triples then the kinetic energy increases by 9. If a vehicle's speed doubles from 20 mph to 40 mph, the distance needed to stop the vehicle increases by ___ times. (a) G(z)H(z)=1/z-, (b) G(z)H(z)=1/z-2, (c)G(z)H(z)=z1(c)G(z)H(z)=z^{-1} It is the tendency of objects to keep moving in a straight line at constant velocity. It is the tendency of objects to keep moving in a straight line at constant velocity. a) 2 b) 3 c) 4 d) 8. c) 4. endstream endobj 1008 0 obj <>/Metadata 96 0 R/OCProperties<>/OCGs[1023 0 R]>>/Outlines 109 0 R/PageLayout/SinglePage/Pages 999 0 R/StructTreeRoot 172 0 R/Type/Catalog>> endobj 1009 0 obj <>/ExtGState<>/Font<>/Properties<>/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 1010 0 obj <>stream b) accelerator pedal 10. You may need a second or two to move your foot to the brake pedal. When its speed triples? b) neutral The sides of the truck bed are at least 18 inches high. a) right-of-space This states that if the net force acting on an object is zero then the object will either remain at rest or continue to move in a straight line with no change in speed. According to the ____ the amount of energy in the universe does not change. By a half or moreIf the surface is icy, what should you do? what 6 factors can affect braking distance. A microwave cookbook gives tips on cooking favorite and new dishes. b) braking time c) horn Explain the relationship between inertia and traction. For which of the following is kinetic energy converted to potential energy? and more. The cylinder is pressurized to p=2000p=2000p=2000 psi. Small conditions can make a big difference to the time it takes you to stop your car, such as going a few km/hr slower or being alert on the road. a) 30 to 40 seconds Explanation. Determine the amount of oxygen in the tank if the temperature is 28^\circ{}C and the atmospheric pressure is 97 kPa. (c)G(z)H(z)=z1, , (e) G(z)H(z)=1/(z+)(z-), (f) G(z)H(z)=z 3/z(z+1/3), (g) G(z)H(z)=1/z-z-, (h) G(z)H(z)=z-/z(z-2), (i) G(z)H(z)=(s+1)/z. The drivers both see the child at the same time and both take 1.5 seconds before they fully apply the brakes. When you are driving you should be able to determine whether you can safely move your vehicle into a space located: All of the above; (To the front, side, and rear). c) school zones b) space b) there is no restriction a) evasive steering Otherwise, click the red Don't know box. 8.5"'mA&H4$m~)t4qvn=VmU{ Approximately what percent of crashes are caused by driver error? c) you may not turn c) 3rd drink To allow enough distance to stop in response to threatening objects and conditions, you should identify a plant path of travel _____ seconds ahead. When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. b) green and yellow b) receiving a message Each year, approximately how many people are killed in motor vehicle-related collisions in the U.S? A corresponding decrease is to be expected in zones with lower speed limits. Which sense is most critical to safe driving? c) 15 mph Load 1 is connected in wye, and the phase impedance is 4+j24+j 2 \Omega4+j2. phonograph Make sure youre sober and alert every time you drive because sometimes an extra second can make all the difference. b) braking If a vehicle's speed doubles, the forces involved in a collision will be quadrupled. b) FALSE, PCV stand for: a) accelerating a) approximately 2 seconds b) noon to 2 p.m. When braking hard, the weight of the vehicle noticeably shifts where? Assume that air obeys the Berthelot equation of state: p=RTvbaTv2p=\frac{R T}{v-b}-\frac{a}{T v^2} Find the phase voltage of the source. Calculate the GPE of a 1.0 kg ball at 1.0 meter elevation. It doubles. 1022 0 obj <>/Filter/FlateDecode/ID[]/Index[1007 24]/Info 1006 0 R/Length 80/Prev 552605/Root 1008 0 R/Size 1031/Type/XRef/W[1 2 1]>>stream Design a circuit to realize the transfer function below using only resistors, capacitors and not more than one OPAMP\mathrm{OP} The car increases its speed at a constant rate at as it goes 5.00 times around the track. c. You can cook meat in the microwave oven. c) reverse Answers. b. a) 2 endstream endobj startxref This makes the car deviate from the straight line in which it is travelling and go round the bend. d) touch, The most common form of color blindness is the inability to distinguish between: d) 600, When planning a long trip, drivers should avoid driving more than ______ hours per day. d) the pavement is about to narrow, a) traffic is traveling in the same direction, Solid yellow pavement line indicates: Adding reaction distance to braking distance, the stopping distance for Car 1 is 27.1 + 16.3 = 43.4 metres. relative quickness of motion, pace of progress, etc.. Velocity is the pace and direction of an object's movement, whereas speed is . Privacy Policy and How often should the pre-driving checks identified for approaching the vehicle, outside the vehicle and inside the vehicle be performed? d) parking brake, Total stopping time is made up of: One reason for this increased risk is reaction timethe time it takes between a person perceiving a danger and reacting to it. Reducing the speed to 40 kilometres/hour, as in school zones, reduces the likelihood of death by a factor of 4 compared with 60 kilometres/hour, and of course the likelihood of an impact is also dramatically reduced. Animals may be transported in the back of a pickup truck only if: Answers. Terms of Service. Use these flashcards to help memorize information. The force of an impact to a pedestrian knocked down at 60 mph will be .. times as much as when knocked down at 30 mph Four b) approximately 3 seconds c) depressant noun. ___________________ laws are designed to help drivers understand who should be granted the privilege of proceeding first when more than one vehicle approaches an intersection at about the same time. Then click the card to flip it. The slope or grade of the roadway is importanta car will stop more quickly if it is going uphill because gravity will help. 1. vehicle space needs, natural laws, and traction Learn with flashcards, games, and more for free. a) reaction time 60 mph: Thinking Distance of 60 feet + Braking Distance of 180 feet = Total Distance of 240 feet, 40 mph: Thinking Distance of 40 feet + Braking Distance of 80 feet = Total Distance of 120 feet, 20 mph: Thinking Distance of 20 feet + Braking Distance of 20 feet = Total Distance of 40 feet. three primary driver controls of the vehicle are, when targeting, the eyesight should primarily focus toward the center of your, when single vehicle crashes occur, they will typically involve improper what or what. An animal must not be transported in the back of a pickup or other truck unless the animal is properly secured to prevent it from falling . d) the restriction applies only at night, ____________ laws are designed to help drivers understand who should be granted the privilege of proceeding first when more than one vehicle approaches an intersection at about the same time. It quadruples. p=vbRTTv2a, a=2764R2Tc3pc,b=18RTcpca=\frac{27}{64} \frac{R^2 T_{\mathrm{c}}^3}{p_{\mathrm{c}}}, \quad b=\frac{1}{8} \frac{R T_{\mathrm{c}}}{p_{\mathrm{c}}} c) weaving a=6427pcR2Tc3,b=81pcRTc. Driving a very heavy vehicle does not lessen the effect of the impact much because, although there is more metal to absorb the impact energy, there is also more energy to be absorbed. c) every time you drive using a roof top carrier might raise your car's. to allow enough distance to stop in respond to threatening objects for conditions, you should identify a planned path of travel how many seconds ahead, under most conditions a minimum following interval of how many seconds will enable you to adjust speed or position appropriately, if a vehicle's speed doubles from 20mph to 40mph, the distance needed to stop the vehicle increases by how many times, when braking hard, the weight of the vehicle noticeably shifts, when turning to the right, the contact patches of which tires will increase in size, You ain't rememering this stuffclinical tech. alkaline storage battery, 3 inventions Thomas Edison is responsible for. O and A - The car is traveling at constant speed from 0 to 20 m/s. a) 1st drink The girl pushes the. What are 7 signs of a slippery road? b) yellow, red, green The height of the ramp and the speed of each car at the bottom of the ramp is given. Study with Quizlet and memorize flashcards containing terms like When you are driving you should be able to determine whether you can safely move your vehicle into a space located:, Which of the following is considered a vehicle communication device?, Novice drivers account for _____ times more crashes than drivers with 5 additional years of experience. left. To counteract inertia when navigating a bend in the road we need to apply a forcewhich we do by turning the steering wheel to change the direction of the tyres. d) pressurized conditioning ventilation, When you are towing a trailer with good traction and visibility your following distance should be: inertiathe resistance of any physical object to any change in its state of motion, including changes to its speed and direction. Reaction time can be slowed down if the driver is sleepy, sick, impaired, or distracted. b) 50 vehicle balance refers to the distribution of what of the vehicle on the chassis. a) five sided Which of the following is considered a vehicle communication device? It may not seem like much, but driving even a few kilometres per hour above the speed limit greatly increases the risk of an accident. The distance your vehicle travels from the time you apply the brake until you stop is, If a vehicle increases its speed from 20 mph to 60 mph, it's braking distance will increase by, speed, weight, and distance between impact and stopping, Any reduction in speed during a collision will, A restraint that provides protection without having to be handled by the occupant is called, Which energy-absorbing feature protects the driver in a front or rear collision, required in all states for children up to a certain age, A properly installed child safety seat is. We figure that while the speed limit is 60 km/h the police won't pull us over if we sit on 65. b) 20 to 30 seconds If a vehicle's speed doubles from 20 mph to 40 mph, the distance needed to stop the vehicle increases by ____ times. Careers Partnerships Help Center Contact Our Blog. Each byte consists of exactly 8 bits. Just after rain begins If, instead of hitting a pedestrian, the car hits a tree, a brick wall, or some other heavy object, then the cars energy of motion (kinetic energy) is all dissipated when the car body is bent and smashed. b) brakes Sam must be accelerated at a rate of about 320 metres per second per second during this short time. G(ej)H(ej), and phase lots as a function of frequency or at least calculate, G(ejH(ej)|G(e^{j}H(e^{j})| When you are towing a trailer with good traction and visibility your following distance should be: ___________ is a coming together or blending of vehicles to maintain a smooth, uninterrupted traffic flow. Black ice 5. Chicken is everyones favorite food. c) seeing A race car starts from rest on a circular track. d) circular shaped, Regulatory signs that have a red circle with a slash indicate to you: Explanation. G(ej)H(ej). Your email address is only used to allow you to reset your password. All of the above, (reaction time, braking time, perception time). Because the vehicle ahead may roll back into your vehicle when it starts or if the driver is inexperienced.You should always increase to the proper rpm before shifting to the next higher gear. fn=nv/2L If the speed (v) doubles my fn will also doubles ? (a) Determine the axial stress a\sigma_aa and the hoop stress h\sigma_hh in the cylindrical body of the tank. to the front. If Sam weighs 50 kilograms, then the force required is the product of his mass and his accelerationabout 16,000 newtons or about 1.6 tonnes weight. a) parking lots Thus, the impact occurs at about 30 kilometres/hour, probably fast enough to kill Sam. DI@R&LL2(G6*(KCUH!sP8\,Fy r}Ci^ AF&eLLsK@F5?3lb8p$a?EL3 I7CZH320>|@8rg@T1 A your car, is higher on the outside than on the inside, Large vehicles, such as trucks and buses, have. a) first gear Why? An adequate space margin is one that provides a driver with: All of the above; (space, time, visibility), Graduated Driver License Programs generally involve _____ stages. d) 20 mph, On a vehicle with a manual transmission, fourth and fifth gears are generally engaged at speeds over: a) 9 to 11 a.m. A steel oxygen cylinder used by a welder has an inner radius of ri=4inr_i=4 \mathrm{in}ri=4in. When a book is moved from a higher shelf to a lower shelf, its _____changes. What happens when vehicle doubles in speed going from 20 MPH to 40 MPH? c) yellow, green, red d) 5 to 10 seconds, Which sense is most critical to safe driving? Perception time, reaction time, and braking time. In those few moments, Car 1 travels 27.1 metres and Car 2 travels 25.0 metres. Car 1, travelling at 65 km/h, is overtaking Car 2, which is travelling at 60 km/h. a) straight The line connecting the source to the loads has an impedance of 0.2+j0.10.2+j 0.1 \Omega0.2+j0.1. Answers. Two cars of equal weight and braking ability are travelling along the same road. It stays about the same. The formula used to calculate braking distance can be derived from a general equation of physics: where Vf is the final velocity, V0 is the initial velocity, a is the rate of deceleration and d is the distance travelled during deceleration. A patient has secretions in the upper lobe apical segments. A woman can lift barrels a vertical distance of 1 meter or can roll them up a 2-meter long ramp to the same elevation. So we happily let the speedo hover just above the speed limit, unaware that by so doing we are greatly magnifying our chances of crashing. are in the same box the next time you log in. The equation for figuring out how far your car will go from the moment you see a hazard to the moment youre completely stopped is: > [thinking distance] + [braking distance] = [total stopping distance]. Using the graph, you estimate the car's kinetic energy at a speed of 50 m/s to be ______ kJ. Check out the total stopping distance equations below for vehicles driving at various speeds. Under most conditions a minimum following interval of how long will enable you to adjust speed or position appropriately? c) to the rear d) yielding, Alcohol is a ____________ drug. What is the area for percussion in this patient? The effects of alcohol will start with the. One-thirdOn packed snow, how much should you reduce your speed? d) all of the above are correct, The sequence of traffic lights from top to bottom is: b) narcotic a) traffic is traveling in the same direction Since the impact force on Sam depends on the impact speed divided by the impact time, it increases as the square of the impact speed. When a vehicle's speed triples, how much more distance doe sit need to stop? There are two loads connected in parallel. Also, it is helpful to determine the values of for which, G(ej)H(ej)G(e^{j})H(e^{j}) When you double the speed of your car, your braking distance quadruples. c) 5 to 15 mph Emeritus Professor, University of New England, Visiting Fellow, Australian National University and adjunct professor at The University of New South Wales. The faster youre driving, the more ground youll cover as you react and start braking. A vehicles speed when going downhill tends to Increase Energy of Motion is another way of expressing Kinetic energy Because of its energy of motion, when a vehicle's speed doubles, the vehicle needs about 4 times the distance to stop The gripping action that keeps a tire from slipping on the roadway is called Friction d) reckless driving, Most states have blood-alcohol concentration limits of _____ percent for drivers under age 21. stock ticker d) all of the above are correct, When you are a new driver and practicing turning right or left with good traction and normal conditions, your speed not exceed: d) lower intestine, The overall risk of a collision while suing a cell phone increases by _________ percent. c) emergency vehicle When driving, you control the vehicle with the: a) brakes b) steering wheel c) accelerator d) all of the above are correct. The speed time graph shows the motion of a car over a period of 40 seconds. On a vehicle with a manual transmission, fourth and fifth gears are generally engaged at speeds over: Vehicles use the greatest amount of fuel when _____________. It stays about the same. 12-15 seconds. Watch where you are travelling through the back window. These calculations assume that the driver has an average reaction time. When you double the speed of your car, your braking distance quadruples. Four times the distance to stop Because of its energy of motion, when a vehicle's speed doubles, the vehicle needs about: Friction The gripping action that keeps a tire from slipping on the roadway is called what? For a car travelling at 70 km/h the risk increased fourfold. a) stimulant Sketch the Nyquist plot for each of the following specifications of G(z)H(z), and use the discrete-time Nyquist criterion to determine the range of values of K (if any such range exists) for which the closed-look system is stable. Knowing this information trafficengineers study trafficpatterns and identify where driving errors might occur and determine safe . Which statement best describes reaction time ? d. A whole chicken is never cost-effective for a family. What is total stopping time is made up of? Explanation. The time taken for this is about the time it takes for the car to travel a distance equal to Sam's thicknessabout 20 centimetres. That means you should make sure your tires have the right air pressure level and plenty of tread.