A car's brake system transfers pressure from the main cylinder to the brake shoes on all four wheels. The surface area of the main cylinder piston is 7.2 sq cm, and that of the piston in each individual brake cylinder

43,682 results
  1. PHYSICS

    You are driving your car and the traffic light ahead turns red. You applied the brake for 3.00 seconds and the velocity of the car decreases to 4.50 m/s. The car's deceleration has a magnitude of 2.70 m/s^2 during this time. What is the car's displacement?

  2. Physics

    Two cars are driving at the same constant speed on a straight road, with car 1 in front of car 2. Car 1 suddenly starts to brake with constant acceleration and stops in 10 m. At the instant car 1 comes to a stop, car 2 begins to brake with the same

  3. Physics

    On a dry road, a car with good tires may be able to brake with a constant deceleration of 4.17 m/s2. (a) How long does such a car, initially traveling at 22.4 m/s, take to stop? (b) How far does it travel in this time?

  4. physics

    Which of the following could be considered to be an 'accelerator' in an automobile? A. brake pedal B. gas pedal (choose this one but says wrong) C. steering wheel D. All of these can cause the car to accelerate.

  5. la

    The mechanic said the car needed some brake things replaced. Which phrase uses domain-specific vocabulary to replace the imprecise language in the sentence? (1 point) an important part the wheel cylinders some part that wore out things that stop the car

  6. physics

    You testify as an expert witness in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill (see the figure). You find that the slope of the hill is θ = 14.0°, that the

  7. PHYSICS

    A 745i BMW car can brake to a stop in a distance of 122 ft from a speed of 60.0 mi/h. To brake to a stop from a speed of 80.0 mi/h requires a stopping distance of 221 ft. What is the average braking acceleration for the following intervals? Express the

  8. Physics

    A car is initially travelling at a constant speed of 20 m/s along a highway. Suddenly, the driver applies the brakes, causing the car to accelerate at -5.0 m/s^2. If the driver applied the brakes 0.50s late, determine the distance the car travels from the

  9. Physics

    When a driver brakes an automobile, the friction between the brake drums and the brake shoes converts the car's kinetic energy to thermal energy. If a 1750-kg automobile traveling at 28 m/s comes to a halt, how much does the temperature rise in each of the

  10. physics

    When a driver presses the brake pedal, his car stops with an acceleration of -8.7 m/s2. How far will the car travel while coming to a complete stop if its initial speed was 10 m/s?

  11. physical

    Part A Each blade on a wind turbine is engineered to produce an effective force through its center of mass that is perpendicular to its long axis. (Part A figure) The magnitude of the force produced by each blade in a wind of speed v is F=(40.0~{\rm

  12. please help! physics

    A 1200 kg car is moving at 95 km/h when the driver notices a deer down the road. He immediately moves his foot toward the brake pedal, taking only 0.50 seconds before the car starts slowing down. The brakes cause a net force of 2400 N (backwards) on the

  13. physics

    Driving home from school one day, you spot a ball rolling out into the street (see the figure ). You brake for 1.00 , slowing your 970- car from 16.0 to 9.50 .

  14. physics

    A motor car of mass 800kg travelling at 20m/s is brought to rest by brake in 100m.calculate the average braking force required.in physics

  15. Physics

    A car's brake system transfers pressure from the main cylinder to the brake shoes on all four wheels. The surface area of the main cylinder piston is 7.2 sq cm, and that of the piston in each individual brake cylinder is 1.80 sq cm. The driver exerts a

  16. THEORY OF MECHINE

    a brake shoe applied to a drum by a lever ab which is pivoted at a fixed point a and rigidly fixed to the shoe. The radius of the drum is 160mm. The coefficient of friction at the brake lining is 0.3. If the drum rotates clockwise, find the braking torque

  17. physics

    The drawing shows a hydraulic system used with disc brakes. The force vector F is applied perpendicularly to the brake pedal. The pedal rotates about the axis shown in the drawing and causes a force to be applied perpendicularly to the input piston (radius

  18. physics

    The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the car. Calculate the acceleration of the car. If you could also tell me how you came to the answer, it would help me in the

  19. B -tech

    Fig. Shows a brake shoe applied to a drum by a lever ab which is pivoted at a fixed point a and rigidly fixed to the shoe. The radius of the drum is 160mm. The coefficient of friction at the brake lining is 0.3. If the drum rotates clockwise, find the

  20. physics

    A stationary bicycle is raised off the ground, and its front wheel (m = 1.3 kg) is rotating at an angular velocity of 14.0 rad/s (see the drawing). The front brake is then applied for 3.0 s, and the wheel slows down to 2.7 rad/s. Assume that all the mass

  21. physics

    On a dry road, a car with good tires may be able to brake with a constant deceleration of 3.31 m/s2. (a) How long does such a car, initially traveling at 28.2 m/s, take to stop? (b) How far does it travel in this time?

  22. theory of machine

    a differential band brake has a drum of diameter 800mm. the two ends of the band are fixed to the pins on the opposite sides of the fulcrum of the lever at a distance of a=40mm and b=200mm from the fulcrum. the angle of contact is 270 degree and mue = 0.2

  23. physics

    Driving home from school one day, you spot a ball rolling out into the street (see the figure ). You brake for 1.00 , slowing your 970- car from 16.0 to 9.50 . What was the magnitude of the average force exerted on your car during braking? How far did you

  24. physics

    Driving home from school one day, you spot a ball rolling out into the street (see the figure ). You brake for 1.40 , slowing your 950- car from 16.0 to 9.50 .

  25. physics

    You are arguing over a cell phone while trailing an unmarked police car by 25.0 m; both your car and the police car are traveling at 120 km/h. Your argument diverts your attention from the police car for 2.0 s (long enough for you to look at the phone and

  26. college physics

    A hydraulic brake system is shown. The area of the piston in the master cylinder is 6.32 cm^2, and the area of the piston in the brake cylinder is 1.83 cm^2. The coefficient of kinetic friction between the brake shoe and the wheel drum is 0.443. How large

  27. physics

    A hydraulic brake system is shown. The area of the piston in the master cylinder is 6.32 cm^2, and the area of the piston in the brake cylinder is 1.83 cm^2. The coefficient of kinetic friction between the brake shoe and the wheel drum is 0.443. How large

  28. physics

    Estimate the rise in temperature of the brake discs in a car of mass 1200g,travelling at 30m/s which is brought to rest by the application of the brakes alone,the brake disc have a total mass of 5kg.Assummed that there is no heat loss and that the material

  29. physics

    the brake linings of the wheels of a car have total mass 4.8kg and specific heat capacity 1200 J kg -1 K-1. calculate the maximum possible temperature rise of the brake linings when the car (of mass 800kg) travelling at 15 ms-1 is brought to rest by

  30. Physics

    The coil in the figure below contains 425 turns and has an area per turn of 3.00 10-3 m2. The magnetic field is 0.21 T, and the current in the coil is 0.27 A. A brake shoe is pressed perpendicularly against the shaft to keep the coil from turning. The

  31. Science

    A car is traveling at 8.9 m/s (20mph) in a school zone. A child darts in front of the car. Ignoring reaction time, the car can accelerate (brake) at -4.57 m/s. -How long will it take for the car to stop? -How far will the car travel in that time?

  32. physics

    a car is approaching a traffic light at 25m/s when it turns red. The driver takes 1 second to react and put his foot on the brake pedal, after which the car decelerates at 2m/s^2. find the distance needed for the car to come to stop after the light turns

  33. Physics

    A car starting from rest is accelerated uniformly to a velocity at 100.8km/h. it brake is applied in 4 seconds, find its acceleration and its retardation converting from km/h to ms.

  34. Physics

    A car without ABS (antilock brake system) was moving at 16.5 m/s when the driver hit the brake to make a sudden stop. The coefficients of static and kinetic friction between the tires and the road are 0.553 and 0.410, respectively. (a) What was the

  35. Physics

    A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;

  36. Science

    Laura squeezes the hand brakes of her bicycle with a force of 60 N. If the brake pads push on the wheel with a force of 300 N, what is the mechanical advantage of this bike’s brake system?

  37. Thermodynamic Physics

    When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1500 kg automobile traveling at 42 m/s comes to a halt after its brakes are applied,

  38. physics

    When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1250 kg automobile traveling at 37.2 m/s comes to a halt after its brakes are applied,

  39. physics

    When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1250 kg automobile traveling at 37.2 m/s comes to a halt after its brakes are applied,

  40. physics

    When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1280 kg automobile traveling at 30.8 m/s comes to a halt after its brakes are applied,

  41. Physics

    When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1500 kg automobile traveling at 42 m/s comes to a halt after its brakes are applied,

  42. Physics

    You testify as an "expert witness" in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill. You find that the slope of the hill is theta= 12.0°, that the cars were

  43. physic

    Pressing the brake of a car causes it to slow down from 29 m/s at a rate of -2.0 m/s2 for a period of 4 s. How far did the car travel during these 4 s?

  44. Physics - Kinematics

    While driving a car, you see an obstruction in the road. It takes you 0.80 seconds to react and put your foot on the brake. The car is travelling at 25 m/s. If, when the brakes are applied, the acceleration is 9.3 m/s^2 [backwards], what is the total

  45. Physics

    A 1500 kg car is travelling at 20 m/s. It brakes to a stop causing the brake pads to heat up from 25 degrees Celsius to a temperature too hot to touch. The total mass of the pads altogether is 4.0 kg and their heat capacity is 8.9 x 102 J/kg0C. If these

  46. engineering

    A car of mass 1100kg stands on an incline of 8 degrees. If the hand brake is released, what will be the velocity of the car after travelling 80 m if the resistance to motion is equal to 170 N

  47. PHYSICS

    When the brake are applied to a moving car travelling 60km\hr it decelerate at uniform rate of 5m\s

  48. physic

    A 2000 kg car is traveling at 20.0 m/s. Then, it puts on the brakes and comes to a complete stop. The heat generated due to the stopping heats up the brakes. The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg °C. What is

  49. Accident Investigation: Law+Physics

    What exactly do these following driving violations mean? I'm not a driver, so I'm not entirely sure of their meanings... -Following too closely [does that count if a car crashes into another?] -Reckless driving [does that count if a car crashes into

  50. Check my answers for drivers education please!

    star*** by my answer 1. When you must handle several hazards at the same time, the best tactic is to (1 point) compromise the hazards. adjust speed to separate the hazards. minimize, then separate the hazards. **** 2. How many zones of space surrounding

  51. physics

    A car is travelling at 31.5 km/hr near a school zone. When the driver sees a child crossing the road 40 metres away, the driver applies the brake and skids to a stop. The resulting deceleration of the car is given as -2.21 m/s . How long will it take for

  52. Physics

    A driver of a car going 95 km/h suddenly sees the lights of a barrier ahead. It takes the driver 0.55 s before he applies the brakes (this is known as reaction time). Once he does begin to brake, he accelerates at a rate of -10.0 m/s²

  53. physics

    A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;

  54. physics

    A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;

  55. statistics

    ATUW Motors is planning to replace the brake pad of its cars with a similar quality brake pads but cheaper. This is part of the company strategy to cut costs but wants to maintain the quality of its cars and parts. The variance of the existing brake pads

  56. Physics

    A car is running at a speed of 100km/h if brake is applied how much ditance will it cover before stopping from point where brake is applied ? How

  57. math

    Q1.Navyug industriess Ltd.has annual requirement of 5,000 piece of brake cylinder for its popular brand of golf carts.each brake cylinder has a carrying cost of 25 per unit per year.the ordering cost per order is 800.calculate the total inventory cost for

  58. Physics

    When a driver brakes an automobile, friction between the brakes disks and the brake pads converts part of the car’s kinetic energy that is transferred to the pads and disks by heat. During braking 192,000 J of energy is added to each wheel’s disk and

  59. Physics

    The coil in the figure below contains 425 turns and has an area per turn of 3.00 10-3 m2. The magnetic field is 0.21 T, and the current in the coil is 0.27 A. A brake shoe is pressed perpendicularly against the shaft to keep the coil from turning. The

  60. math (stats)

    For a car traveling 30 mph in normal conditions, the distance required to brake to a stop is normally with a mean of 50 feet and a standard deviation of 8. you are traveling in a area at 30 mph and a car swerves into your path at a distance of 60 feet

  61. BusinessLAW

    I buys a car from Ace Car Dealer. The car was manufactured and assembled by Bord Motors. The brakes were supplied to Bord Motors by Acme Brake Company. One month after the purchase, I gets into an accident because the brakes on the car are defective. Who

  62. Physics

    A stationary bicycle is raised off the ground, and its front wheel (m = 1.70 kg) is rotating at an angular velocity of 21.9 rad/s (see the figure). The front brake is then applied for 1.35 s, and the wheel slows down to 4.47 rad/s. Assume that all the mass

  63. physics

    Consider a horizontal road with such a set of traffic lights, each spaced 100 m apart. A car sits at the first traffic light. At t=0 the light turns green and the car accelerates. What is the maximum time t in secondsthe next light must turn green by so

  64. Please help-behavior

    Braking your car after you observe a child's ball rolling into the street from between parked vehicles is instinctive requires a conscious decision is a reflex is instinctice and requires a conscious decision. (my choice) am I right here? The braking

  65. grade 11 physics

    sue drives her 1452 kg car along a straight road at a constant velocity of 30 m/s [E]. Ger brakes suddently give out. she puts the car in neutral and lets it coast for 25 seconds. The air drag decelerates the car to a velocityof 25 m/s [E]. assume a

  66. grade 11 physics

    PLEASE HELP - NOBODY ANSWERED MY QUESTION YESTERDAY. sue drives her 1452 kg car along a straight road at a constant velocity of 30 m/s [E]. Ger brakes suddently give out. she puts the car in neutral and lets it coast for 25 seconds. The air drag

  67. physics

    A racing car has a mass of 1250kg. when the brake pedal is pushed down a constant breaking force of 10 000 N is exerted on the car. Calculate the acceleration of the car.

  68. physics-energy conservation

    when you apply the brakes of a car its kinetic energy or energy of motion decreases. a)to what form of energy is the kinetic energy converted? b)where does the resulting energy end up? Do the brake drums on the wheels heat up? so does it convert into heat

  69. Physics

    Among the safety features on elevator cages are spring-loaded brake pads which grip the guide rail if the elevator cable should break. Suppose that an elevator cage of 2000 kg has two such pads, arranged to press against opposite sides of the guide rail,

  70. Applied Physics

    A car is traveling at 20 meters per second. The driver steps on the brake. The car is in equilibrium

  71. Physics

    You testify as an expert witness in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill (Fig. 1). You find that the slope of the hill is Ɵ = 120 , that the cars were

  72. physics

    A 1500-kg wooden roller coaster car traveling at 15 m/s approaches the loading station where the under-track brake strips are pneumatically actuated to slow the car to a stop in 10m. What is the work done on the car by the brakes? What is the retarding

  73. math

    The driver of an 1,840 kg race car applies the brake to come to a complete stop. If the car accelerates at -3.4 m/s2 what is the net force acting on the race car?

  74. Science

    A car was travelling at the speed of 20m/s when the driver saw a cat on the road 40 m away. He step on the brake and the car came into a halt after 6 seconds. How far did the car travel. What will happen to the cat?

  75. physics

    A car is travelling at 20m/s along a road. A child runs out into the road 50m ahead and the car driver steps on the brake pedal. What must the car's declerations be if the car is to slop just before it reaches the child .

  76. Science.

    A Car is travelling at 20 km/s along a road . A child runs out into the road some ahead and the car driver steps on the brake pedal.What must the car's Acceleration be if the car is to stop just before it reaches the child?

  77. Physics

    A car of mass 1.33 103 kg is initially moving on a level road at a speed of 18.0 m/s. Compute the increase in temperature of the brakes, assuming that all the mechanical energy ends up as internal energy in the brake system. Assume a total heat capacity of

  78. Physics

    A car of mass 1.25 103 kg is initially moving on a level road at a speed of 17.0 m/s. Compute the increase in temperature of the brakes, assuming that all the mechanical energy ends up as internal energy in the brake system. Assume a total heat capacity of

  79. PHYSICS

    compute for the density of a brake fluid used in a car which has a volume of 600cm^3 and a mass of 100 g?

  80. Physics

    Your 2000 kg car is going 40 m/s on the highway when you see a police car up ahead. You apply the maximum 10000 N of brake force to slow your car down to the speed limit of 30 m/s. How many seconds will it take you to get down to the speed limit?

  81. physics

    A red car with a 70kW engine and a mass of 1335kg accelerates at full power for 2s from rest along a level stretch of road heading east before going down a 3m high hill. The driver puts the car in neutral to accelerate as they coast down the hill. Some

  82. jabu

    the driver of a car travelling at 100km/hr suddenly sight an obstacle 50m ahead of him What maximum acceleration must be applied to the car by applying the brake in order to avoid hitting the obstacle

  83. Physics

    A drunken driver crashes his car into a parked car that has its brakes set. The two cars move off together (perfectly inelastic collision), with the locked wheels of the parked car leaving skid marks 6.0 m in length. If the mass of the moving car is 2130kg

  84. PHYSICS

    A corvette ZR1 can brake to a stop from 60mph in 2.6 seconds. If the car has a weight of 3225 pounds, what force (in Newtons) acts on the car? a= (V^2 - V^1)/t a= (0-88ft/sec)/2.6 sec a= -10.316 m/s^2 -10.32N Is this correct?

  85. PHYSICS

    A 970kg car is at the top of a 38m -long, 2.5 ∘ incline. Its parking brake fails and it starts rolling down the hill. Halfway down, it strikes and sticks to a 1280kg parked car. Ignoring friction, what's the speed of the joined cars at the bottom of the

  86. physics

    when you brake a car at a stop sign, what force provides the impulse to stop the car?

  87. Accident Investigation: Law+Physics

    What exactly do these following driving violations mean? I'm not a driver, so I'm not entirely sure of their meanings... -Following too closely [does that count if a car crashes into another?] -Reckless driving [does that count if a car crashes into

  88. Algebra

    a car driver accelerates to a speed of 35 miles per hour and then takes her foot off the gas pedal even though she does not press the brake pedal at any time she eventually rolls to a stop which of the following most likely causes the car to come to a stop

  89. Physics

    The speed of the car at the base of a 30 ft hill is 45 mi/h. Assuming the driver keeps her foot off the brake and accelerator pedals, what will be the speed of the car at the top of the hill?

  90. physics

    a car is moving at speed of 50km/hr ,can be stopped by brake at least at 6 m.If the same car is moving at speed of 100 km/hr ,what is the minimum stopping distance?

  91. Physical Science

    Natasha says that in a car, the accelerator pedal is used to make the car go faster, and does not actually waste fuel. It is the brake pedal that wastes fuel. Is she right? Why?

  92. URGENT I WILL BE WHIPPED PLEASE HELP

    replace with gerunds and particpales. How to drive a car. First take the car key and put it in the ignition. Turn the key, the car should start running. Put your foot on the brake and change your car into drive or backwards. Then turn left or right and

  93. physics

    A motor car of mass 800kg travelling at 20m/s is brought to rest by brake in 100m.calculate the average braking force required.in physics

  94. Language arts

    1.Rewrite this with gerunds and participles. How to drive a car. First take the car key and put it in the ignition. Turn the key, the car should start. Put your foot on the brake and change your car into drive or backwards. Then turn left or right and

  95. Physics

    A particular brake design can apply a force of 2000 N. If you wish to have a deceleration of 5m s1, what is the largest car weight you can use with this design?

  96. Physics

    A car parked on a hill. The driver starts the car, accelerates until the car is driving at constant speed, drives at constant speed, then brakes to put the brake pad in contact with the spinning wheels. How is static friction, sliding friction, rolling

  97. Math

    Every 6 months Melinda takes her vehicle in for its lubrication service. This service cost $29.95 each visit. Every 12 months, the vehicle requires a maintenance service that costs $89.98. During the maintenance service, the mechanic finds a problem with

  98. physics

    The driver of a 1,450kg car, whose iron brake calipers mass is 3kg endures a brain malfuction at the top of a 20 degree parking ramp 20 meters long. It approaches the ramp going 20m/s and the driver recovers just as the car reaches the bottom. If the

  99. science

    A car driver accelerates to a speed of 35 mph and then takes her foot off the pedal. Even though she does not press the brake pedal at any time, she eventually rolls to a stop. What causes that?

  100. PHYSICS ANSWER CHECK

    A car can brake to a stop from 60mph in 2.6 seconds. If the car has a weight of 3225 lbs, what force in Newton's acts on the car. F=ma, vt=v0+at, a=(vt-v0)/t=(0-60mph)/2.6s=-23.1m/s^2 3225 lbs=1462.84 kg thus F=1462.84kg*(-23.1m/s^2)=-63.3N

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