As a traffic light turns green, a car at rest begins to move forward at a uniform acceleration of 3.1 m/s^2 [E]. At the same time, a truck passes through the intersection travelling at a constant velocity of 15 m.s

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  1. physics

    You are driving to the grocery store at 20 m/s. You are 110 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.70 s and that your car brakes with constant acceleration. How far are you from the intersection when

  2. physics

    A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from zero to 5.47m/s in 0.919s. What linear impulse does a 74.1kg passenger in the car experience?

  3. 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?

  4. Physics

    As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/second squared. At the instant the car begins to accelerate, a truck with the constant velocity of 21 m/ second squared passes in the next lane. HINT:Set the 2

  5. Physics

    A person driving her car at 45km/h approaches an intersection just as the traffic light turns yellow. She knew that the yellow light lasts only 2s before turning red,and shi is 28m away from the near side of the intersection. Should she try to stop,or

  6. Physics

    A car is stopped at a traffic light. When the light turns green, the driver accelerates so that the car is going 10 m/s after 5s. What is the car’s average acceleration?

  7. Physics

    A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t) = bt2 - ct3, where b = 2.60 m/s2 and c = 0.150 m/s3. (a) Calculate the average velocity of the car for the time interval t = 0

  8. science

    When the front of a 5.0 m long bus traveling at a constant speed of 20 m/s is 55 m away from an intersection, the traffic light turns yellow. It will take 3.0 s before the traffic light turns red. The driver’s reaction time is 0.25 s. The bus can

  9. Physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.6 m/s2 for 4.5 seconds. It then continues at a constant speed for 7.3 seconds, before applying the

  10. Physics

    A baseball is hit straight up into the air at an initial velocity of 35 m/s. How long does it take for the baseball to reach its highest position? and As a traffic light turns green, a car at rest begins to move forward at a uniform acceleration of 3.1

  11. physics

    a car travelling at constant velocity passes a stationary motorcycle at a traffic light as the car overtakes the motorcycle,the motorcycle accelerates uniformly from rest for 10 sec the following displacement time graph represents the motion of both

  12. Physics

    As a traffic light turns green, a car at rest begins to move forward at a uniform acceleration of 3.1 m/s^2 [E]. At the same time, a truck passes through the intersection travelling at a constant velocity of 15 m.s [E]. At what time does the car pass the

  13. AP physics please help

    A car is stopped at a traffic light. It then travels along a straight road such that its distance from the light is given by x(t) = bt^2 - ct^3, where b = 3 m/s^2 and c = 0.110 m/s^3. a) Calculate the average velocity of the car for the time interval t = 0

  14. physic

    *Which of the following is an example of acceleration? A.After a traffic light turns green, a car speeds up B: A football player slows to a stop after scoring a touchdown C: A car driving 30 mi/h turns left at an intersection D: All of the above

  15. Physics

    At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 3.55 m/s2 . At the same instant a truck, traveling with a constant speed of 22.0 m/s , overtakes and passes the car.

  16. Physics

    Hi guys, would appreciate some help with this problem: When a light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.80 mi/h·s. In the next bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant

  17. physics

    The car stationary in front of a red traffic light. As the light turns green , a truck goes past at a constant velocity of 1.5 m/s. At the same moment , the car begins to accelerate at 1.25 m/s 2 . When it reaches 2.5 m/s the car continues at this velocity

  18. physics

    A cyclist is at rest at a traffic light. When the light turns green, he begins accelerating at 2.13 m/s2. How many seconds after the light turns green does he reach a cruising speed of 5.05 m/s?

  19. Physics

    You are driving to the grocery store at 20 m/s . You are 110m from an intersection when the traffic light turns red. Assume that your reaction time is 0.50s and that your car brakes with constant acceleration. _ How far are you from the intersection when

  20. Engineering Physics

    A car and a train move together along straight, parallel paths with the same constant cruising speed v(initial). At t=0 the car driver notices a red light ahead and slows down with constant acceleration -a(initial). Just as the car comes to a full stop,

  21. physics

    Vroom-vroom! As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.40 mi/h·s. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 11.5 mi/h·s.

  22. physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 4.6 m/s2 for 4.4 seconds. It then continues at a constant speed for 8.5 seconds, before applying the

  23. Physics

    Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v_0. Car 1 begins to move at t=0, speeding up with a constant acceleration a_x. Car 2

  24. Physics

    Figure 1 shows a red car and a green car that move toward each other. Figure 2 is a graph of their motion, showing the positions xg0 = 270 m and xr0 = -35.0 m at time t = 0 (time they intersect =12s). The green car has a constant speed of 20.0 m/s and the

  25. Physics

    As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.10 mi/h·s. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 13.0 mi/h·s. Each vehicle

  26. physics

    A person driving her car at 56km/hr approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 20.s before turning to red, and she is 30m away from the near side of the intersection. The intersection is

  27. physics college

    An antelope moving with constant acceleration covers the distance between two points 70.0 m apart in 7.00 s. Its speed as it passes the second point is 15.0 m/s. (a) What is its speed at the first point? (b) What is its acceleration? A car is stopped at a

  28. Physics

    As soon as a traffic light turns green, a car speeds up from rest to 45.0 mi/h with constant acceleration 8.50 mi/h/s. In the adjoining bike lane, a cyclist speeds up from rest to 15.0 mi/h with constant acceleration 12.50 mi/h/s. Each vehicle maintains

  29. algebra

    A car is stopped at a traffic light. The light changes to green and the driver starts to drive, accelerating at a rate of 4 m/s^2. Write an equation for the distance the car travels in time.

  30. Phyiscs

    A subway train is traveling at a rate of 22.4 m/s. Brakes are applied and it slows down at a constant rate of 3.5 m/s^2 until it stops at a station. Find the total distance traveled while braking. 72 m 142 m 274 m 163 m A cyclist is stopped at a traffic

  31. physics

    A cars is moving at 12.0m/s when the traffic light turns orange. How far will the car move between the time the lights turn orange and the time the car finally stops? The driver's reaction time is 1.00s The orange light will turn red after 3.5s

  32. ap physics

    A car leaves an intersection after a light turns green. It starts from rest and reaches a speed of 13.4 m/s in 5.0 s. The radius of a tire of the car is 0.25 mDetermine the average rotational acceleration of the tire.

  33. math

    the traffic signal at 4th and main turns green every 6 minutes. the signal at 5th and broadway turns green every 4 minutes. if both turned green at 12:15 p. m., when are the next three times that both will turn green at the same time?

  34. Physics

    A cyclist is stopped at a traffic light. When the light turns green, the cyclist accelerates at 3.2 m/s. After 2.4 seconds, what is the cyclist’s speed?

  35. physics

    At the instant a traffic light turns green, a car starts from rest with a given constant acceleration 0.5 m/s^2. just as the light turns green, a bus, traveling with a given cinstant speed 16.0 m/s, passes the car. The car speeds up and passes the bus some

  36. physics

    As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 9.90 mi/h·s. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 13.5 mi/h·s. Each vehicle

  37. physics

    A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t) = bt2 – ct3, where b = 2.40m/s2 and c = 0.120m/s3. (a) Calculate the average velocity of the car for the time interval t = 0

  38. Physics

    The instant a traffic light turns green a car that has been waiting at the light starts forward with a constant acceleration of 10 ft/s^2. At the same instant a truck traveling at a constant 30 ft/s overtakes and passes the car. 1. how far beyond the

  39. phys

    A motorist is driving at 20m/s{\rm m/s} when she sees that a traffic light 200m{\rm m} ahead has just turned red. She knows that this light stays red for 15s{\rm s} , and she wants to reach the light just as it turns green again. It takes her 1.0s{\rm s}

  40. physics

    A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 5.85 m/s in 0.712 s. What is the magnitude of the linear impulse experienced by a 70.5 kg passenger in the car during this time?

  41. Physics

    As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with constant acceleration 9.00 mi/h/s. In the adjoining bicycle lane, a cyclist speeds up from rest to 20.0 mi/h with constant acceleration 13.0 mi/h/s. Each vehicle maintains

  42. science

    when a car suddenly stops at a red light a book lying on the car seat slides forward why does the book continue to move forward?

  43. physics

    At the instant a traffic light turns green, a car starts from rest with a given constant acceleration 0.5 m/s^2. just as the light turns green, a bus, traveling with a given cinstant speed 16.0 m/s, passes the car. The car speeds up and passes the bus some

  44. physics

    At the instant a traffic light turns green, a car starts moving with a constant acceleration a of 4.00 m/s2. At the same instant a truck, traveling with a constant speed of 10.09 m/s, overtakes and passes the car. How far beyond the traffic light will the

  45. Physics

    As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/s^2.At the instant the car begins to accelerate, a truck with a constant velcoity of 21 m/s pass in the next lane. (a) How far will the car travel before it

  46. 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

  47. Physics

    To save fuel, some truck drivers try to maintain a constant speed when possible. A truck traveling at 110.0 km/hr approaches a car stopped at the red light. When the truck is 211.7 meters from the car the light turns green and the car immediately begins to

  48. physics

    Q: Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5.7 m/s2 for 3.2 seconds. It then continues at a constant speed for 8.8 seconds, before applying the

  49. physics

    At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.3 m/s2. At the same instant a truck, traveling with a constant speed of 9.4 m/s, overtakes and passes the automobile. (a) How far beyond the traffic

  50. Science Help

    1.) A rail gun uses electromagnetic energy to accelerate objects quickly over a short distance. In an experiment, a 2.00 kg projectile remains on the rails of the gun for only 2.10x10-2 s, but in that time it goes from rest to a velocity of 4.00×103 m/s.

  51. Physics

    At the instant a traffic light turns green, an automobile that has been waiting at an intersection starts moving forward with a constant acceleration of 2.00m/s(squared). At the same time a truck traveling with a constant speed of 18m/s, overtakes and

  52. physics

    As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/s^2. At the instant the car begins to accelerate, a truck with a constant velocity of 21 m/s passes in the next lane. A)How far will the car travel before it

  53. physics

    Let's say you're driving in your car, approaching a red light on the Camp Hill Bypass. A black Porsche is stopped at the light in the right lane, but there's no-one in the left lane, so you pull into the left lane. You're traveling at 40 km/hr, and when

  54. science

    Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v0. Car 1 begins to move at t=0, speeding up with a constant acceleration ax. Car 2 continues

  55. physics 1

    You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.13 s, and the velocity of the car decreases to +4.90 m/s. The car's deceleration has a magnitude of 3.55 m/s2 during this time. What is the car's displacement?

  56. physics

    Two cars adjacent to each other on a highway. The first car accelerates uniformly at 3m/s2 the moment the light turns green. The second car is moving at 18m/s and is beside the first car at the instant the light changes and continues driving with a

  57. Math

    A car is stopped at a red light, and starts moving at time t = 0 when the light turns green, with an acceleration given by a(t) = √t, with t given in seconds, and distances given in metres. a) Find a formula for the velocity v(t), via integration. b) How

  58. physics

    The car stationary in front of a red traffic light. As the light turns green , a truck goes past at a constant velocity of 1.5 m/s. At the same moment , the car begins to accelerate at 1.25 m/s 2 . When it reaches 2.5 m/s the car continues at this velocity

  59. math

    when a traffic light turns green, a car accelerates at a constant rate, the decelerates in the same manner to stop at the next traffic light. The speed of the car, s, is given by the equation, s=-10 /t-8/ + 80 where t is time. Find the time , t, it takes

  60. Physics

    At the instant a traffic light turns green, a car starts moving with a constant acceleration a of 3.05 m/s^2. At the same time a truck, traveling with a constant speed of 10.15 m/s, overtakes and passes the car. How far beyond the traffic light will the

  61. physics

    As soon as a traffic light turns green, a car speeds up from rest to 46.0 mi/h with constant acceleration 8.50 mi/h-s. In the adjoining bike lane, a cyclist speeds up from rest to 24.0 mi/h with constant acceleration 12.00 mi/h-s. Each vehicle maintains

  62. Physical science

    A car is traveling at a speed of 30.m^-1 when a traffic light,40 ahead turns red.the driver take 1 second to react ( reaction time) before he slams on the brakes.The car stopped within 2 seconds. Will the car stop at traffic light? Show by calculation

  63. Physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3 m/s2 for 3.6 seconds. It then continues at a constant speed for 11.7 seconds, before applying the

  64. physics

    The driver of a car is initially moving at a constant speed of 71.8 km/h when a traffic light turns red. If a 0.550 s reaction time is required before the brakes can be applied, what is the distance in meters traveled by the car before it begins to slow

  65. physics

    please somebdy help me solveing this. Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 4.3 m/s2 for 3.3 seconds. It then continues at a constant speed

  66. physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5.5 m/s2 for 4.9 seconds. It then continues at a constant speed for 6.7 seconds, before applying the

  67. physics help

    A 1100 kg automobile is at rest at a traffic signal. At the instant the light turns green, the automobile starts to move with a constant acceleration of 3.0 m/s2. At the same instant a 2800 kg truck, traveling at a constant speed of 8.0 m/s, overtakes and

  68. Physics

    A woman driving her car approaches an intersection and begins to accelerate just as the traffic light turns green. Her velocity is the function of time described by the equation: v(t)=2t^2-8t+10 (A) Use calculus to find her instantaneous acceleration at

  69. Physics

    A person driving her car at 54 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection. The intersection is

  70. physics with 6 questions

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.3 m/s2 for 3.9 seconds. It then continues at a constant speed for 13.7 seconds, before applying the

  71. Physics

    At the instant a traffic light turns green, a car starts with a constant acceleration of 1.8 m/s(squared). At the same instant, a truck travelling at a constant velocity of 8.5 m/s passes the car. How far beyond the starting point will the car catch up to

  72. Physics

    You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.28 s, and the velocity of the car decreases to + 4.76 m/s. The car’s deceleration has a magnitude of 2.99 m/s2 during this time. What is the car’s displacement?

  73. physics

    5)As the traffic light becomes green, a car starts to travels with an acceleration of 2.5 m/s2. Calculate the velocity of this car in km/h after 12 seconds of acceleratio

  74. Physics

    You are driving to the grocery store at 11.9m/s. You are 169.0m from an intersection when the traffic light turns red. Assume that your reaction time is 0.730s and that your car brakes with constant acceleration. How far are you from the intersection when

  75. College Physics

    A cyclist is at rest at a traffic light. When the light turns green, he begins accelerating at 2.56 m/s2. How far does he go after the light turns green until he reaches a cruising speed of 10.88 m/s?

  76. Physics

    A car is going 20m/s when they see a traffic light 200m ahead turn red. The traffic light is known to stay red for 15s. The driver wants to reach the light as it turns green. It takes them 1s to press the breaks and the car slows down at a constant rate.

  77. science

    a car is stopped at a traffic light, which then turns green. The car speeds up for 85 seconds and travels a distance of 1.5 miles. what is the car's acceleration from the traffic light?

  78. st joseph school

    when a traffic light turns green, a car accelerates at a constant rate, the decelerates in the same manner to stop at the next traffic light. The speed of the car, s, is given by the equation, s=-10 /t-8/ + 80 where t is time. Find the time , t, it takes

  79. 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

  80. Science

    A traffic light turns green, a car accelerate from rest and cover 10m in 4s . What is the acceleration of the car , assume uniform acceleration

  81. physics

    As soon as a traffic light turns green, a car speeds up from rest to 46.0 mi/h with constant acceleration 8.50 mi/h-s. In the adjoining bike lane, a cyclist speeds up from rest to 24.0 mi/h with constant acceleration 12.00 mi/h-s. Each vehicle maintains

  82. Physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 4.8 m/s2 for 4.5 seconds. It then continues at a constant speed for 9.9 seconds, before applying the

  83. Physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.5 m/s2 for 3.6 seconds. It then continues at a constant speed for 10.1 seconds, before applying the

  84. Physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5 m/s2 for 4.2 seconds. It then continues at a constant speed for 11.1 seconds, before applying the

  85. physics

    As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with constant acceleration 7.50 mi/h-s. In the adjoining bike lane, a cyclist speeds up from rest to 17.0 mi/h with constant acceleration 14.50 mi/h-s. Each vehicle maintains

  86. physics

    As soon as a traffic light turns green, a car speeds up from rest to 57.0 mi/h with constant acceleration 8.00 mi/h/s. In the adjoining bike lane, a cyclist speeds up from rest to 21.0 mi/h with constant acceleration 12.50 mi/h/s. Each vehicle maintains

  87. physics

    The driver of a car is initially moving at a constant speed of 76.0 km/h when a traffic light turns red. If a 0.455 s reaction time is required before the brakes can be applied, what is the distance in meters traveled by the car before it begins to slow

  88. applied mechanics

    a motorist driving his car at a speed of 72km/hr observes that the traffic lights ahead of him turns red if he comes to a halt at the traffic light 5seconds starting from first find the distance of the car from the light when the motorist observed the red

  89. Physis

    Figure (a) shows a red car and a green car that move toward each other. Figure (b) is a graph of their motion, showing the positions xg0 = 270 m and xr0 = -35 m at time t = 0. The green car has a constant speed of 24 m/s and the red car begins from rest.

  90. ap physics

    A car leaves an intersection after a light turns green. It starts from rest and reaches a speed of 13.4 m/s in 5.0 s. The radius of a tire of the car is 0.25 m.

  91. physics

    When the traffic light turns green, a scooter moves with constant acceleration of 2 ms–2. At same time, a car moving with constant speed of 10 m/s overtakes it. How far beyond the starting point, will the car overtake the scooter?

  92. Physics

    At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 2.85m/s^2. At the same instant a truck, traveling with a constant speed of 19.0m/s, overtakes and passes the car. A)

  93. physics

    A motorist is driving at 20m/s{\rm m/s} when she sees that a traffic light 200m{\rm m} ahead has just turned red. She knows that this light stays red for 15s{\rm s} , and she wants to reach the light just as it turns green again. It takes her 1.0s{\rm s}

  94. physic

    a car sits still at a red light. once the light turns green, the driver accelerates at a rate of 3.5 m/s^2. how far has the car moved after 6 seconds?

  95. algebra

    A car was stopped at a red light. When the light turns green, the car reaches a speed of 41 miles per hour in 1 seconds. What is the acceleration, to 1 decimal place?

  96. physics

    A blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.2 m/s2. A green car arrives at the position of the stop-light 7.5 s after the light had turned green. What is the slowest constant speed which the

  97. Physics

    A blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.2 m/s2. A green car arrives at the position of the stop-light 7.5 s after the light had turned green. What is the slowest constant speed which the

  98. Physics

    A car sits at a red light. Once the light turns in green, the driver accelerats at a rat of 3.5m/s^2. How far has the car moved after 6 seconds? I have so far d= (1/2)at^2 please check is it (1/2)(3.5m/s^2)(6 seconds) is the answer 1.75 m/s^2 x 6 sec=10.5

  99. Math

    A car is stopped at a red light, and starts moving at time t = 0 when the light turns green, with an acceleration given by a(t) = √t, with t given in seconds, and distances given in metres. a. Find a Formul

  100. Physics

    At the instant a traffic light turns green, an automobile that has been waiting at an intersection starts moving forward with a constant acceleration of 2.00m/s(squared). At the same time a truck traveling with a constant speed of 18m/s, overtakes and

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