1. dynamics of rigid bodies

    10. The flatbed truck is traveling at constant speed of 60 kph up the 15% grade when the 100 kg crate which it carries is given a shove which imparts to an initial relative velocity x = 3m/s towards the rear of the truck. If the crate slides a distance x =
  2. physics

    A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the truck's flatbed is 0.360, and the coefficient of kinetic friction is 0.160. (a) The truck accelerates forward on
  3. physics

    A crate rests on a flatbed truck which is initially traveling at 17.8 m/s on a level road. The driver applies the brakes and the truck is brought to a halt in a distance of 33.1 m. If the deceleration of the truck is constant, what is the minimum
  4. physics

    A crate of mass 59.3 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.357, and the coefficient of kinetic friction is 0.304. (a) The truck accelerates forward on
  5. Physics HELP!

    A crate of mass 52.8 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.351, and the coefficient of kinetic friction is 0.305. (a) The truck accelerates forward on
  6. Physics URGENT!!!

    A crate of mass 52.8 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.351, and the coefficient of kinetic friction is 0.305. (a) The truck accelerates forward on
  7. Physics- Elena please help!

    A crate of mass 52.8 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.351, and the coefficient of kinetic friction is 0.305. (a) The truck accelerates forward on
  8. Physics

    A truck traveling at a constant speed of 40.0 km/h applies its brakes and comes to a complete stop in 5.0 s. The truck starts again and accelerates at a constant rate of 0.80 m/s2. After restarting, how far does the truck travel before reaching its
  9. physics

    A crate of mass 55.6 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.330, and the coefficient of kinetic friction is 0.320. (a) The truck accelerates forward on
  10. Physics

    At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.50 m/s^2. At the same instant, a truck, traveling with a constant speed of 15.4 m/s, overtakes and passes
  11. Math

    what value of m will make 4x-7y=5 and 9x+my=3 parallel? a car leaves town A at 10:00 a.m. and travels at a constant speed of 40 kph towards a town B. After 30 minutes, a bus leaves town A and travels towards town B at a constant speed of 56 kph. at what
  12. physics

    The driver of a car wishes to pass a truck that is traveling at a constant speed of 19.0 m/s . Initially, the car is also traveling at a speed 19.0 m/s and its front bumper is a distance 24.3 m behind the truck's rear bumper. The car begins accelerating at
  13. physics

    A crate of mass 96 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.14. What is the smallest radius of curvature, R, the truck can take, if the speed with which it is going around a
  14. physics

    A crate of mass 97 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.26. What is the smallest radius of curvature (in m) that the truck can take, if the speed with which it is going
  15. Physics

    A package of dishes (mass 50.0 kg) sits on the flatbed of a pickup truck with an open tailgate. The coefficient of static friction between the package and the truck's flatbed is 0.330, and the coefficient of kinetic friction is 0.230. (a) The truck
  16. 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
  17. 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
  18. Physics

    An engine block of mass M is on the flatbed of a pickup truck that is traveling in a straight line down a level road with an initial speed of 25 m/s. The coefficient of static friction between the block and the bed is μs = 0.566. Find the minimum
  19. 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)
  20. physics

    A crate of mass 55.6 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.330, and the coefficient of kinetic friction is 0.320. (b) The truck barely exceeds this
  21. 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
  22. physics

    At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.10m/s2 . At the same instant, a truck, traveling with a constant speed of 15.1m/s , overtakes and passes the
  23. physics

    A crate of mass 132 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.22. What is the smallest radius of curvature that the truck can take without the crate slipping, if the speed with
  24. Physics

    A flatbed truck with a box sitting on the bed accelerates from rest on level ground. The truck’s speed as a function of time is 15t –2t^2 during this acceleration. The truck reaches its maximum speed and cruises along at this speed for 4 minutes. It
  25. ALGEBRA

    A car travels 20 kph faster than a truck. The car covers 350 km in two hours less than the time it takes the truck to travel the same distance. What is the speed of the car? How about the truck?
  26. physics - i need A.S.A.P

    A truck traveling at a constant speed of 30.6 m/s passes by a police car which is at rest. The police officer catches up to the truck in 700 m, maintaining a constant acceleration. i)Calculate how long it took the police's car to overtake the truck speeder
  27. physic

    A police car is travelling in a straight line with constant speed vp.A truck travelling in the same direction with speed 3/2 vp passes the police car.The truck driver realizes that she is speeding and immediately begins to slow down at a constant rate
  28. physics

    A 125 kg crate rests on the flatbed of a truck that moves at a speed of 15.0 m/s around an unbanked curve whose radius is 66.0m. This crate does not slip relative to the truck. Obtain the magnitude of the static frictional force that the truck bed exerts
  29. Physics

    A truck of mass 8,000 kg is traveling along a level road at an initial speed of 25 m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13 m/s. (a) Find the total work done on the truck.
  30. Physics

    At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.50 . At the same instant, a truck, traveling with a constant speed of 15.4 , overtakes and passes the
  31. 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
  32. physics

    A construction worker riding in the tray of a truck traveling at 10 m/s, sees one of his friends passing and decides to jump off the truck. The magnitude of his initial speed of jumping is: (a) zero (b) Less than the truck's (c) Equal to that of the truck
  33. physics

    A certain truck can slow at a maximum rate of 4.6 m/s2 in an emergency. When traveling in this truck at a constant speed of 19 m/s the driver spots a large hole in the road 48.2 m in from of his position. The truck continues moving forward at a constant
  34. 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 is 11.7 m down the road and traveling with a constant speed of 10.4 m/s. (a) How far beyond the traffic signal will
  35. physics

    A crate of oranges weighing 164 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.30 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.6
  36. physics

    A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc = 18.9 m/s and a 1500 kg pickup is traveling north toward the same intersection. The car and truck collide at the intersection and stick together. After the
  37. Physics need help thnk you

    A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5
  38. Wow is there no one to help with physics???

    A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5
  39. Physics

    question 1 ..A 5 kg rock is thrown vertically upward at 12 m/s. How high did the rock rise? question 2 The driver of a truck traveling at 126 km/h on a highway sees a sign which indicated that 800 m after the sign the maximum speed will be 90 km/h . When
  40. Physics

    A 15.0 m long truck traveling at 40.0 mph has a braking capability of 5.00 m/s2 from this speed. It is approaching a 10.0-m wide intersection with a traffic light that is turning yellow. (a) What is the minimum distance the truck can be from the
  41. Physics to drwl please help

    A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5
  42. Physics please help its urgent i need help

    A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5
  43. physics

    A 180-kg crate is sitting on the flatbed of a moving truck. The coefficient of sliding friction between the crate and the truck bed is 0.30. Two taut cables are attached to either side of the crate. Each cable can exert a maximum horizontal force of 650 N
  44. physics

    A truck on a straight road starts from rest and accelerates at 2.0 m/s2 until it reaches a speed of 20 m/s. Then the truck travels for 20 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.0 s. (a)
  45. physics

    A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 11.0 m/s. Then the truck travels for 65.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00 s.
  46. Physics Grade 12

    Heather is sitting on her car at a spotlight. At the instant light turns green, she starts accelerating at 2.2 m/s/s. At the same moment a truck rumbles past her car going a constant speed of 12.2 m/s. Heather is infuriated at being passed by a truck and
  47. PHYSICS

    A flatbed truck of mass 2000kg traveling 20 m/s (about 45mph)carries a load of mass 500kg positioned 3 meters behind the cab. The load is kept on the truck by friction, and the coefficient of friction between the load and the bed of the truck is 0.5. What
  48. physics

    A truck of mass 8,000kg is traveling along a level road at an initial speed of 25m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13m/s.
  49. Physics

    a car and a truck start from rest at the same instant with the car initially 50m behind the truck. The truck has a constant acceleration of 2m/s^2 and the car has a constant acceleration of 3m/s^2. The car overtakes the truck after how many seconds? At
  50. Physics

    A truck on a straight road starts from rest and accelerates at 3.0 m/s2 until it reaches a speed of 18.1 m/s. Then the truck travels for 24.5 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.7 s.
  51. Physics

    A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 32.0 m/s. Then the truck travels for 76.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00 s.
  52. physics

    Ige confused, the truck driver sound the horn of the truck, which has a frequency of 260HZ. The speed of sound in air is 340m/s. an observer hears the sound while traveling in a bus toward the truck at a speed of 30m/s. a) what is the wavelength of the
  53. College Physics!!!

    A truck on a straight road starts from rest accelerating at 2.0 m/s2 until it reaches a speed of 20 m/s. Then the truck travels for 20 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.0 s. What is
  54. Physics

    A crate of mass 43 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.47. What is the maximum acceleration a (in m/s2) the truck can have without the crate sliding off?
  55. 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
  56. Physics

    A wooden crate sits on the floor of a flatbed truck that is initially at rest, and the coefficient of static friction between the crate and the floor of the truck is 0.25. The driver of the truck wants to accelerate to a velocity of 20 m/s within 4.0 s. If
  57. Physics

    Need someone to check my work and answers: At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 2.80 m/s2. At the same instant a truck, traveling with a constant speed of
  58. Physics

    A flatbed egg truck is in a drag race. The truck is carrying a 450 lb. crate of eggs in the back. The coefficients of friction between the crate and the truck bed are μs = 0.9 and μk = 0.4. What is the maximum acceleration the truck can have
  59. Physics Help, Please

    A flatbed egg truck is in a drag race. The truck is carrying a 450 lb. crate of eggs in the back. The coefficients of friction between the crate and the truck bed are μs = 0.9 and μk = 0.4. What is the maximum acceleration the truck can have
  60. 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
  61. Physic

    A car traveling 100 km/h is 200m away from a truck traveling 50 km/h (in the same direction). Assuming constant braking acceleration, what is the minimum deceleration the car must have if it is not to hit the truck? Can someone hint me on how I can start
  62. physics

    A flatbed truck is carrying a heavy crate. The coefficient of static friction between the crate and the bed of the truck is 0.66.What is the maximum rate at which the driver can decelerate and still avoid having the crate slide against the cab of the
  63. Physics

    A truck is traveling at a speed of 23.0 m/s along a level road. A crate is resting on the bed of the truck, and the coefficient of static friction between the crate and the truck bed is 0.610. Determine the shortest distance in which the truck can come to
  64. Pre-AP Physics

    A flatbed truck is carrying a heavy crate. The coefficient of static friction between the crate and the bed of the truck is 0.47. What is the maximum rate at which the driver can slow and avoid having the crate slide against the cab of the truck?
  65. Gen physics

    A truck is traveling at a speed of 33.1 m/s along a level road. A crate is resting on the bed of the truck, and the coefficient of static friction between the crate and the truck bed is 0.632. Determine the shortest distance in which the truck can come to
  66. physics

    A 4000 kg truck traveling at constant velocity and a braking force of 20000 N is suddenly applied. It takes 6 seconds for the truck to stop. a) what is the deceleration of the truck? b) what is the velocity of the truck before the brakes were applied c)
  67. mechanics of dynamic

    A thief escapes and boarded on a truck and traveled at a constant speed of 55kph. Two hours later after the truck left , a policeman pursued the truck at a constant speed of 80kph. How long it did take the policeman to catch up the thief ?
  68. Physics

    If a young girl is in a truck that is rolling down a hill with a force of 8765 N, what force must the brakes apply on the truck to have the truck roll at a constant speed? Would she have to apply more than 8765 N or less than 8765 N to get the truck to
  69. Physics

    A large flatbed truck hauls a heavy wood crate as shown. The crate is not tied down and simply rests on the metal bed of the truck. Find the maximum acceleration the truck can have if the crate is not to slide along the truck bed. (Static friction is 0.5
  70. physics

    A 1200 kg car traveling north at 14 m/s is rear ended by a 2000 kg truck traveling at 25 m/s. If the truck and car lock bumpers and stick together, what is their speed immediately after the collision?
  71. physics

    3) A truck is traveling at 35 m/s. Because of an obstruction on the road, it is forced to stop. a) If the truck can decelerate at a constant 5.0 m/s2 how long will it take to stop? b) How far does the truck travel before it stops?
  72. physics

    suppose you are driving on a straight two lane road at a constant speed of 88 km/h truck travelling at a constant speed of 104 km/h approaches you.what is the truck's velocity relative to you.
  73. 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
  74. physics

    A person riding in the back of a pickup truck traveling at 60km/h on a straight, level road throws a ball with a speed of 10km/h relative to the truck in the direction of the truck's motion.
  75. 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
  76. Physics

    An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck. The truck has a constant acceleration of 2.15m/s2 , and the automobile an acceleration of 3.47m/s2 . The automobile overtakes
  77. Physics

    A truck of mass 7520 kg is traveling along a level road at an initial speed of 32.9 m/s and then slows to a final speed of 17.9 m/s. Find the total work done on the truck.
  78. physics

    A flatbed truck is carrying a 2540 kg crate of heavy machinery. If the coefficient of static friction between the crate and the bed of the truck is 0.540 , what is the maximum rate (in meters/second^2) that the driver can decelerate when coming to a stop,
  79. physics

    A flatbed truck is carrying a 2610kg crate of heavy machinery. if the coefficient of static friction between the crate and the bed of the truck is 0.530, what is the maximum rate(in meters/second^2) that the driver can decelerate when coming to a stop in
  80. physics

    1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2. 2.An airplane taking off from a landing field has a run of 500 m. It starts from rest, moves with constant acceleration, and
  81. physics

    1.A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x
  82. physics

    1.A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x
  83. algebra

    Truck A leaves a truck stop traveling at 80 km/hr. Four hours later, truck BB leaves the same truck stop traveling in the same direction at 90 km/ hr. How long does it take truck B to catch up to truck A?
  84. mathematics

    A man drove 220 km in 3.5h. Part of the trip was at 60 kph and the rest at 65 kph. Find the time spent at the slower speed.
  85. Physics

    A car, in overtaking trailer, uniformly accelerated its speed from 40 kph to 90 kph in 8 seconds. Calculate the distance traveled during the period of acceleration.
  86. physics(shortest distance

    A truck is traveling at a speed of 33.1 m/s along a level road. A crate is resting on the bed of the truck, and the coefficient of static friction between the crate and the truck bed is 0.632. Determine the shortest distance in which the truck can come to
  87. physics

    A car moving at a speed of approximately 176.5 km/h. 923 m in front of the car, there is a truck moving at a speed of 84.2 km/h in the same direction. 1.What is the name of the physical process that would occur if both vehicles kept moving at constant
  88. physics

    A truck travels up a hill with a 13◦ incline. The truck has a constant speed of 18 m/s. What is the horizontal component of the truck’s velocity? Answer in units of m/s
  89. physics

    A truck travels up a hill with a 7.2◦ incline. The truck has a constant speed of 19 m/s. What is the horizontal component of the truck’s velocity? Answer in units of m/s.
  90. Physics/Calculus

    An automobile with a mass of 1316 kg is parked on a moving flatbed railcar; the flatbed is 1.5 m above the ground. The railcar has a mass of 40,810 kg and is moving to the right at a constant speed v = 8.8 m/s on a frictionless rail. The automobile then
  91. 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
  92. physics

    a truck with a mass of 2100 kg travels at a constant speed of 75 km/h. (a) What is the magnitude of the truck’s linear momentum? kg·m/s (b) What average force would be required to stop the truck in 7.5 s? does this have to do with f=ma or not? help
  93. Physics

    An automobile with a mass of 1450 kg is parked on a moving flatbed railcar; the flatbed is 1.50 m above the ground. The railcar has a mass of 38500 kg and is moving to the right at a constant speed of 8.70 m/s on a frictionless rail. The automobile them
  94. Physics

    A truck travelling at 50 kph. It brakes retarding it at 5 m/sec. How long it will take up to stop the truck? What distance reached it when it finally stop?
  95. grade 7 math

    Uniform Motion Related Problem Two planes leave an airport at 2 p.m., one flying south at 450 kph, the other flying north at 675 kph. At what time will they be 3 600 apart?
  96. Physics 1

    A truck travels up a hill with a 5.7◦ incline. The truck has a constant speed of 22 m/s. What is the horizontal component of the truck’s velocity? Answer in units of m/s. NEED HELP ASAP! ASSIGNMENT DUE IN 15 MIN
  97. dynamics

    a truck traveling along a straight road at 20km/h,increases its speed to 120km/hr in 15 s. If its acceleration is constant. determine the distance traveled.
  98. Physics

    A car and a truck starts from rest at the same instant, with the car initially at some distant behind the truck. The truck has a constant acceleration of 2.1 m/s^2, and the car at 3.4 m/s^2. The car overtakes the ruck after it has moved 40.0 m. a) how much
  99. physics

    A person riding in the back of a pickup truck traveling at 60km/h on a straight, level road throws a ball with a speed of 10km/h relative to the truck in the direction of the truck's motion.What is the velocity of the ball relative to a stationary observer
  100. Physics

    A truck on a straight road starts from rest and accelerates at 2.8 m/s^2 until it reaches a speed of 16 m/s. Then the truck travels for 16s at constant speed until the brakes are applied,stopping the truck in a uniform manner in an additional 3.6 s. How