1. speed is the ratio of the distance an object moves to a. the amount of time needed to travel the distance** b. the direction the object moves c. the displacement of an object d. the motion of the object

72,235 results
  1. physics

    As a 2.0-kg object moves from (2i+5j)m to (6i-2j)m, the constant resultant force acting on it is equal to (4i-3j)N. If the speed of the object at the initial position is 4.0 m/s, what is its kinetic energy at its final position? Ans: 40J

  2. physics

    Three applied forces, F1= 20.0 N, F2= 40.0 N, and F3 = 10.0 N act on an object with a mass of 2.00 kg which can move along an inclined plane as shown in the figure. The questions refer to the instant when the object has moved 0.600 m along the surface of

  3. Science help! URGENT. Check answers

    1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. (True) 2. Which of the following forces causes a feather to fall slower than a blowing ball? gravity ← rolling friction sliding friction air resistance 3. A

  4. calculus help check and help

    if an object with mass m is dropped from rest, one model for its speed v after t seconds, taking air resistance into account is v= mg/c(1-e^(-ct/m)) where g is the acceleration due to gravity and c is a positive constant describing air resistance. a)

  5. physics

    A object of mass 3.00 kg is subject to a force Fx that varies with position as in the figure below. Find the work done by the force on the object as it moves as follows: (a) from x = 0 to x = 4.00 m 1 Your response differs from the correct answer by 10% to

  6. Physics

    Two objects moving with a speed v travel in opposite directions in a straight line. The objects stick together when they collide, and move with a speed of v/10 after the collision. (a) What is the ratio of the final kinetic energy of the system to the

  7. Science. Check answers

    1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. (True) 2. Which of the following forces causes a feather to fall slower than a blowing ball? gravity ← rolling friction sliding friction air resistance 3. A

  8. Physics

    Select which of the following statements are True or False. Assume Newtonian Mechanics. 1.The work required to lift a mass one meter depends on the speed at which it is raised.. 2.The acceleration of an object is same in all inertial reference frames.

  9. phys science

    1. speed is the ratio of the distance an object moves to a. the amount of time needed to travel the distance** b. the direction the object moves c. the displacement of an object d. the motion of the object 2. a car traveled 60 km in 2 hours, 84 km in the

  10. physical

    staring from rest, a 3.5 kg object is acted upon by an unbalanced force and acquires a speed of 14.0 m/s after moving a distance of 35 m. find (a) the acceleration of the object, (b) the unbalanced force acting on the object, and (c) the time it takes for

  11. Physics

    Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. The work done on object A is 500J. After the force pulled each object, object A moves twice as fast as object B. Answer the

  12. physics

    how much work is done if a force of 12N moves an object a distance of 5m

  13. Algebra

    An object is dropped from a bridge. Find the distance the object has fallen when its speed reaches 132 ft/s. Use the equation v = 64d , where v is the speed in feet per second and d is the distance in feet.

  14. SCIENCE

    If we decrease the distance an object moves we will decrease the amount of force applied. Decrease the amount of work done. increase the amount of force applied. increase the amount of work done.

  15. physics

    A block of weight w = 25.0 N sits on a frictionless inclined plane, which makes an angle = 25.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 10.6 N , applied parallel to the incline, is just sufficient to pull the block

  16. SCIENCE

    1. If the net force on an object is O N, the forces are considered unbalanced. true false

  17. physics

    An object moves along a straight line and the velocity as a function of time is presented by the above graph. a. Find the acceleration of the object for the time intervals: 0-5 s, 5 s- 10 s, 10 s-15 s, 15 s – 20 s, 20 s – 25 s, and 25 s – 30 s. b.

  18. Physical Science-Can someone check my answers?

    1) The kinetic energy of an object depends on which of the following? A. the object’s mass and direction B. the object’s speed and mass---------- C. the object’s work and direction D. the object’s speed and work 2) In the following situations,

  19. Physics

    Under what condition can a force act on an object and yet do no work on that object? A. The object moves with no acceleration. B. The object does not move. C. The net force on the object is 0. D. The force operates under constant power. E. None of the

  20. Science

    1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. A.)True B.)False** 2. Most people in the United States use feet and miles to measure distance in their everyday lives. Why do scientists in the United States use

  21. physics

    A 9.00 kg object starting from rest falls through a viscous medium and experiences a resistive force = -b , where is the velocity of the object. The object reaches one half its terminal speed in 5.54 s. (a) Determine the terminal speed. (b) At what time is

  22. science

    Two objects slide over a frictionless horizontal surface. The object A with a mass of 5000g is moves at a speed of 4.5m/s toward the object B (mB= 2500g) which is initially at rest. After the collision, both objects are directed to 30O on either side of

  23. science

    Object A and B both start at rest. They both accelerate at the same rate. However , object A accelerates for twice the time as object B. What is the distance traveled by object A compared to that of object B? a) the same distance B) twice as far c) three

  24. Algebra

    An object is dropped from a bridge. Find the distance the object has fallen when the speed reaches 60ft/s. Use the equation v=square root 64d, where v is the speed in feet per second and d is the distance in feet

  25. physics

    A car moves a distance of 200 km. It covers the first half of the distance at speed 40 km/h and second half of the distance by speed v. The average speed is 48 km/h. Find the value of v

  26. Physical Science [repost]

    I had a couple of questions for homework and I answered them the best I could. Can someone check and tell me if they are correct? 1.To describe the position of an object accurately, scientists use what? Ans- Coordinate Systems 2.In science, we have to

  27. Physical Science

    A distance-time graph indicates than an object moves 100 m in 4 s and then remains at rest for 6 s. What is the average speed of the object? A. 50 m/s B. 25 m/s** C. 10 m/s D. 100 m/s Which example identifies a change in motion that produces acceleration?

  28. Physics

    A certain object of mass 0.50 kg moves along the x-axis. Its potential energy is given by U = 3x2 + 8x. Starting at rest, the object is released at the origin. (a) Find the maximum speed attained by the object. (b) Find the position about which it

  29. Physical Science

    1.Instantaneous speed is measured B. when the object reaches its destination. C. at a particular instant. D. over the duration of the trip. 2. A ball is rolled uphill a distance of 5 meters before it slows, stops, and begins to roll back. The ball rolls

  30. Physics

    an electron is sitting 10cm away from a small object -5nc it is let go and moves away from the charged object when it reaches a distance of 15 cm away find its speed

  31. physics

    An object moves with simple harmonic motion of amplitude A and period T. During one complete oscillation, for what length of time is the object's distance from equilibrium greater than A/2? Enter your answer as a formula involving the period. How much time

  32. Physics

    Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag) force that is linearly proportional to the velocity of the object. It's measured that the object reaches half its terminal speed at 4.50 s. a) What is the

  33. physics

    Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 4.44 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.00 kg and r1 = 1.00 m, (2) m2 = 4.50 kg and r2 =

  34. physics

    In the simulation above the motion continues for 3 seconds. If the object travels a distance of 21.3 m in that time determine: (a) the acceleration of the object during the 3 second period, (b) the maximum speed of the object during the 3 second period.

  35. Physica

    which of the following is correct a)the average speed of an object is the elapsed time divided by the distance traveled b)the average velocity of an object is the ratio of the distance traveled by the elapsed time. c)the instantaneous velocity is the limit

  36. Calculus

    An object moves in the xy-plane so that its velocity vector for 0

  37. Physics

    Determine the work done by a person when lowering an object of mass 2.6 kg by a distance of 2.4 m. The person applies a force Fext such that the object moves with constant speed, i.e., without acceleration? My ans: W=F*d F = ma But it's saying constant

  38. Physical Science

    I had a couple of questions for homework and I answered them the best I could. Can someone check and tell me if they are correct? 1.To describe the position of an object accurately, scientists use what? Ans- Coordinate Systems 2.In science, we have to

  39. physics

    An observer measures the length of an object. In which of the following cases is the measured length at a minimum? Choose one answer. a. The observer and the object move with the same speed v in the same direction. b. The observer and the object move with

  40. science

    Q.4a) an object is tied to a rope and moves in a horizontal circle. The maximum tension in the rope is 100N. The object has a mass of 37kg and the rope is 1.4m long. what is the angle of the rope with respect to the Horizontal? b) what is the speed of the

  41. Physics

    A toy of mass 0.151 kg is undergoing SHM on the end of a horizontal spring with force constant k = 301 N/m . When the object is a distance 1.23×10^−2 m from its equilibrium position, it is observed to have a speed of 0.297 m/s. A-What is the total

  42. Physics

    Two objects collide and bounce off one another. After the collision, object m1 = 1.67 kg moves off at 14.5 m/s at a heading of 327 degrees. Object m2 = 1.66 kg moves off at 8.9 m/s at a heading of 211 degrees. Initially, m2 was traveling at 11.8 m/s at a

  43. physics

    You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work? 1. 4 v 2.

  44. Physics

    An object m of mass m=1kg is attached to a string that passes through a hole in the center of a table. The object m moves in a circle of radius r=1.3m. An object M of mass M=2.1kg is tied to the other end of the string, and hangs vertically beneath the

  45. Physics help

    A 1.0 kg object is suspended from a vertical spring whose spring constant is 105 N/m. The object is pulled straight down by an additional distance of 0.25 m and released from rest. Find the speed with which the object passes through its original position

  46. physics

    A skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 12 degrees with the horizontal. The rope moves parallel to the slope with a constant speed of 1.0 m/s. The force of the rope does 880 J of work on the skier as the skier

  47. Science

    Speed is the ratio of the distance an object moves to the

  48. Astronomy

    Now imagine you’re an astronomer on Earth looking at the spectrum of an object in space. In the spectrum you are looking for the so-called Lyman- alpha line of hydrogen which occurs at a wavelength of  = 122 nm. In your telescope, you observe the Lyman-

  49. Physics

    An object is placed in front of a convex mirror with radius of curvature = 17 cm. The object's height is 3.5 cm and it is initially 25 cm in front of the mirror. Find the (a) location and (b) height of the image. Next the object moves closer to the mirror,

  50. Physic please help!

    I am not thinking straight anymore and this is due by 9:00pm. My brain feels a little fried at this point. I have been at it all day. Can someone please help me! (a) An object is placed in front of a convex mirror. Draw a convex mirror (radius of curvature

  51. Physics

    Determine the work done by a person when lowering an object of mass 2.6 kg by a distance of 2.4 m. The person applies a force Fext such that the object moves with constant speed, i.e., without acceleration,

  52. Physics- Equilibrium

    Which of the following is in equilibrium? a. an object that was thrown straight upward at the moment it has zero velocity (my answer) b. an object moving in a circle at constant speed c. an object that moves at constant velocity d. an object that moves at

  53. Physical Science

    I had a couple of questions for homework and I answered them the best I could. Can someone check and tell me if they are correct? 1.To describe the position of an object accurately, scientists use what? Ans- Coordinate Systems 2.In science, we have to

  54. Physics

    An object moves in a circular path at 861 rpm. If the radius of its circular path is 9.27 meters, calculate a) the distance traveled in one complete revolution d = m b) the time it takes for one complete revolution T = seconds c) the linear speed of the

  55. physics

    A certain hydraulic system is designed to exert a force 100 times as large as the one put into it. (a) What must be the ratio of the area of the slave cylinder to the area of the master cylinder? (b) What must be the ratio of their diameters? (c) By what

  56. physics

    Question: Object A is moving at a maximum speed of 6m/s towards Object B. At 50 m away Object B accelerates from the approaching Object A at 0.3m/s^2. Does Object A catch up to Object B and if yes when? I don't know how to answer this at all or even which

  57. physics

    An object is dropped from a bridge.A second object is thrown downwards 2.00s later.They both reach the water 35.0m below at the same instant.What is the initial speed of the second object? I will be very grateful if someone could help me out Heres what I

  58. Physics

    An object is sliding along a flat surface with an initial speed of 30 m/s. What must the coefficient of kinetic friction be between the object and the surface if the object slides to a stop in 10m? What would be the speed of the object after it had only

  59. physics

    I had wrote that was because I was told that in the beginning of the spring being wound the PE=KE. Can I check a concept question, The amount of work required to stop a moving object would be equal to the mass of the object times it intial speed due to

  60. Math

    The formula for the velocity of an object is , where v is the velocity of the object, d is the distance traveled, and t is the time elapsed while that distance is traveled. v=d/t distance = speed times time so time in seconds = distance in meters / speed

  61. Physics

    The position of a particle moves along the equation X = Vo/K (1 - e^(-KT)) Vo and K are constants a)determine the total distance that the particle moves b) Show that the aceleration is derived from the velocity c) Reason how it could take an infinite

  62. Physics

    If object A starts 5m to the right of the orgin and moves to the right at 5m/s. And Object B starts 2m to the right of the orgin and moves to the left at 3 m/s. how do you draw a distance vs time graph for that?

  63. Science

    What is the distance an object travels per unit of time? It's called the speed Depends on the velocity (speed), if the speed is 10mph, then the object would travel 10 miles (distance) per hour (unit of time). I'm unsure what your answer is saying, because

  64. Physics

    An object fired at an angle of 31.9° above the horizontal takes 2.55 s to travel the last 15.5 m of its vertical distance and the last 10.5 m of its horizontal distance. With what speed was the object launched? (Note: This problem does not stipulate that

  65. Physics

    An object fired at an angle of 31.9° above the horizontal takes 2.55 s to travel the last 15.5 m of its vertical distance and the last 10.5 m of its horizontal distance. With what speed was the object launched? (Note: This problem does not stipulate that

  66. Physics

    An object in uniform circular motion moves at a constant speed around a circle with a fixed radius. Why is the object said to be accelerating though it has a constant speed?

  67. Ap Physics

    a 70 kg object sits without sliding on a horizontal platform that rotates at a constant rate of one revolution every 6 seconds about a fixed vertical axis. The object moves on a circle of radius r=2m. If meu is now .4 what is the max distance from the

  68. Science

    An object of mass 50 kg moves with a speed of 10m/s. Calculate the kinetic energy of the object?

  69. Physics

    An object of mass m = 2.7 kg moves with initial speed vinitial = 2.2 m/s, then interacts with its environment, releasing 4.4 J of work. What is the speed of the object after the interaction is completed? My ans: I found KE initially and then subtracted

  70. physics

    An object moves in a straight line at a constant speed. Is it true that here must be no forces of any kind acting on this object? Explain.

  71. physics

    A particle moves half distance by 20 m/s and stay half distance moves by 30 m/s. Average speed of total journey should be?

  72. phsyical science

    the weight of an object is a) the force of earths gravity b) measured in kilograms c) the amount of matter it contains d)never changes no matter where the object moves in our solar system e) the number of particles it contains

  73. Physics check

    1)How is displacement different from distance? Under what conditions can an object travel a certain distance and yet its resultant displacement be zero? Displacement is a vector quantity while distance is a scalar quantity. If an object goes round-trip its

  74. physics

    a car moves from A to B covering a distance of 1000km it covers the first 300km at 60km/h the next 400km at 80 km /h at what speed it should it cover the remaining distance so that achieve an average speed of 70km/h?

  75. physics

    You do a certain amount of work on an object initially at rest, and all the work goes into increasing the objectfs speed. If you do work W, suppose the objectfs final speed is v. What will be the objectfs final speed if you do twice as much work? 1.

  76. physics

    You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work? 1. 4 v 2.

  77. physics

    We release an object of mass M at zero speed at a distance of 2*10^6 Km from the center of the earth. What is the speed at which the object hits the earth? G=6.67*10^-11; g= 9.8 m/s; M=5.97*10^24; r=6.3781*10^6 Suppose the mass of the object is M= 500 kg.

  78. Science

    Can the size of an object's displacement be greater than the distance the object travels? Describe the motion represented by a horizontal line on a distance-time graph. Explain whether, during a trip, a car's instantaneous speed can ever be greater than

  79. science

    I need some one to check my work. plz:) What is the force required to accelerate 1 kilogram of mass at 1 meter per second per second. 1 pound 1 kilometer 1 gram 1 newton*** Mass and _____ affect the gravitational attraction between objects. air resistance

  80. Calculus

    An object moves from left to right along a parabolic shaped path y=(1/4)x^2. At the point (-2,1) the speed is 1. What normal acceleration is the object experiencing at that point?

  81. Physics

    an object falls from the beach 45 meters above the water it falls directly into a boat which moves at a constant speed that was initially 12 meters from the point of impact when the object was released what was the speed of the boat

  82. science

    1.act against the direction of motion and gets larger as an object moves faster 2. an object acted upon by a net force will accelerate in the direction of that force. 3.the speed an object reaches when the force of gravity is balanced by the force of air

  83. science

    1.act against the direction of motion and gets larger as an object moves faster 2. an object acted upon by a net force will accelerate in the direction of that force. 3.the speed an object reaches when the force of gravity is balanced by the force of air

  84. Applied Physics

    A 10 kilogram object subjected to a 20 Newton force moves across a horizontal frictionless surface in the direction of the force. Before the force was applied, the speed of the object was 2.0 meters/second. When the force is removed the object is traveling

  85. Physics

    How much work is done when a force of 70.1 N moves an object a distance of 64.4 m?

  86. Science

    1. If the net force on an object is O N, the forces are considered unbalanced true false 2. Most people in the united states use feet and miles to measure distance in their everyday lives. why do scientist in the United States use meters to measure

  87. physics

    the magnification caused by a convex lens is represented by Hi/Ho, where hi is the height of the image and ho is the height of the object. Using that ratio, show that the magnification caused by a convex lens is equal to di/do(ratio of the image distance

  88. Science

    1. If the net force on an object is O N, the forces are considered unbalanced. true false** 2. Most people in the United States use feet and miles to measure distance in their everyday lives. Why do scientists in the United States use meters to measure

  89. physics

    An object mass 1,448 g is attached to a spring with spring constant k = 815 N/m. The object is then displaced by a distance d from the equilibrium position and is released. Shortly after, it passes with speed v = 6.4 m/s through the equilibrium position.

  90. Physics

    A 20.0 kg crate is pushed across a rough floor for a distance of 90.0 cm. When the force pushing the block is equal to 80.0 N and applied at an angle of 18.0 below horizontal to the block, the block moves at a constant speed of 2.10 m/s. What is the net

  91. Science

    1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. (True) 2. Which of the following forces causes a feather to fall slower than a blowing ball? gravity © rolling friction sliding friction air resistance 3. A

  92. science

    1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. (True) 2. Which of the following forces causes a feather to fall slower than a blowing ball? gravity ← rolling friction sliding friction air resistance 3. A

  93. Calculus

    Suppose a certain object moves in a straight line with velocity v(t)= -2+t+3sin(pi t) where v is in meters per second and t is in seconds. Determine the net change in distance of the object from time t=0 to time t=6 seconds and find the object's average

  94. Physica

    which of the following is correct a)the average speed of an object is the elapsed time divided by the distance traveled b)the average velocity of an object is the ratio of the distance traveled by the elapsed time. c)the instantaneous velocity is the limit

  95. central middle

    In September, the ratio of the amount Ray spent and the amount he saved was 4:1. In October, he got a salary raise. He increased his spending by 25% but save the same amount. Find the new ratio. Is it 5:1?

  96. physics

    an object of mass m moves with a uniform speed v round a circular path of radius r.if its angular speed is g the magnitude of the centripetal force acting on it is?

  97. Physics

    Consider a 4.6 kilogram object moves from the origin always to the right (call that x-axis). Its speed increases uniformly (means constant acceleration) from zero to 0.667 metres/sec. 1.Describe how its velocity changes: initial, final and whether it

  98. Physical Science

    One more worksheet with questions that I need to have checked! 1.Average speed is the ________ an object travels divided by the ________ it takes. Ans- distance; time 2.The velocity of an object is its ___ in a certain _______. Ans- speed; direction 3.The

  99. Physical Science [repost]

    One more worksheet with questions that I need to have checked! 1.Average speed is the ________ an object travels divided by the ________ it takes. Ans- distance; time 2.The velocity of an object is its ___ in a certain _______. Ans- speed; direction 3.The

  100. Physical Science

    One more worksheet with questions that I need to have checked! 1.Average speed is the ________ an object travels divided by the ________ it takes. Ans- distance; time 2.The velocity of an object is its ___ in a certain _______. Ans- speed; direction 3.The

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20