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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

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  1. physics

    You are told that the linear "drag coefficient" due to air resistance for a particular object is 0.64 N · s/m and the object has a mass of 0.0010 kg. Find the magnitude of the terminal velocity of this object when dropped from rest. (Assume the object's
  2. 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)
  3. phy

    Review. An object with a mass of m 5 5.10 kg is attached to the free end of a light string wrapped around a reel of radius R 5 0.250 m and mass M 5 3.00 kg. The reel is a solid disk, free to rotate in a vertical plane about the horizontal axis passing
  4. Physics URGENT

    Object 1 (mass=6.4 kg) traveling in the +x direction at a speed of 14.01m/s undergoes an inelastic collision with Object 2 (mass=5.10kg) which is at rest. Object two flies off at a speed of 11.94m/s and an angle θ2=49.8 °. The diagram below is just a
  5. Physics

    an object is dropped from rest the top of a building 19.6 m hi. calculate the a) time for the object to reach the ground and b) object's speed just before it strikes the ground
  6. physics

    1) a force of 10 N acts on a 5.0 kg object, initially at rest, for 2.5 s. What is the final speed of the object? 2) a 1500 kh car, is allowed to coast along a level track at a speed of 8.0 m/s. It collides and couples with a 2000-kg truck , initially at
  7. Physics

    Object 1 (mass=5.5 kg) traveling in the +x direction at a speed of 12.40m/s undergoes an inelastic collision with Object 2 (mass=4.80kg) which is at rest. Object two flies off at a speed of 7.80m/s and an angle θ2=32.4 °. It is possible that Object 1
  8. Physics

    The acceleration of gravity on the moon is about 1.6 m/sec2. An experiment to test gravity compares the time it takes objects to reach a speed of 10 m/sec after being dropped from rest. How long does an object dropped on the moon have to fall compared to
  9. 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
  10. physics

    One object is at rest and another is moving. The two collide in a one-dimensional, completely inelastic collision. In other words, they stick together and move off with shared velocity. The speed of the object that is moving initially is 25 m/s. The masses
  11. Physics

    On a distant planet, a freely falling object has an acceleration of 17m/s2m/s^2 . Calculate the speed that an object dropped from rest on this planet acquires in 2.0ss .
  12. physic

    a mass 2.9kg object moving at a speed of 5.9m\s sticks a mass 0.88kg object initially at rest. immeditaly after the collision the 2.9kg object has a velocity of 0.99m/s directed 27 degree from its initial line of motion. that is the speed of the 0.88kg
  13. physics

    An object of mass m has an elastic collision with another object initially at rest, and continues to move in original direction but with one-third its original speed. What is the mass of the other object in terms of m?
  14. Physics HELP!

    A war-wolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling pumpkins and pianos. A simple trebuchet is shown in the figure. Model it as a stiff rod of negligible mass 3.00 m long and joining
  15. 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
  16. Physics

    An object of mass 13 kg going to the right with a speed of 9m/s collides with a 10kg object at rest. If the collision is completely elastic, calculate the speed of the 10 kg object after collision.
  17. Physics

    1. A 10-kg object is dropped from rest. After falling a distance of 50 m, it has a speed of 26 m/s. a. Write the expression for the change in mechanical energy caused by the dissipative (air) resistive force on the object during this descent. b. Calculate
  18. math

    galileo showed that objects of different weights fall at the same velocity by dropping 2 objects of different weight form the top of the leaning tower of pisa. a model for the heigh h in feet of an object dropped from an initial h0 feet is h=16t^2+h0,
  19. Physics problem

    An object with a mass of 100kg is dropped from an 80 meter high building and leaves an impression in the ground of 15cm. A.What is the time needed to hit the ground? B. What is the speed of the object when it hits the ground? C. What is the coefficient of
  20. Physics problem

    An object with a mass of 100kg is dropped from an 80 meter high building and leaves an impression in the ground of 15cm. A.What is the time needed to hit the ground? B. What is the speed of the object when it hits the ground? C. What is the coefficient of
  21. Science

    Here are some muliple choice questions I am stuck on. Thanks in advance for help any one can give me. 1) A falling object that has reached its terminal speed continues to gain? a.speed b.both speed and acceleration c.acceleration d.neither speed nor
  22. Physics

    An object is dropped from rest. What is its instantaneous speed when it has been in motion for 7 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/s
  23. physics

    An object is dropped from rest. What is its instantaneous speed when it has been in motion for 8 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s
  24. Physics

    An object is dropped from rest. What is its instantaneous speed when it has been in motion for 5 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s
  25. Physics

    An object is dropped from rest. What is its instantaneous speed when it has been in motion for 5 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s
  26. 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
  27. physics

    What is the initial height big an object if, when dropped from rest , its kinetic energy is 21J 2/3 of the way towards the ground? The mass is 5
  28. Calculus

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

    Three forces acting on an object are given by F1 = ( - 1.85i + 2.50j) N, F2 = ( - 5.10i + 3.25j ) N, and F3 = ( - 45.0i + 48.0j ) N. The object experiences an acceleration of magnitude 3.75 m/s2. (a) What is the direction of the acceleration? _________°
  30. physics

    An object of mass 5 kg is dropped from a certain height. Just before it strikes the ground it has a kinetic energy of 1250 J. From what height was the object dropped? Ignore air resistance and use g = 10 m/s2.
  31. Calculus

    I am stuck on both of these questions. Would you please tell me if my reasoning is correct? 1. An object is dropped off a building. When comparing the average velocity of the object over equal time intervals, explain the difference between early time
  32. Physics

    an object of mass 5 kg has initial speed of 8 m/s it is sliding across an 8 m long table and has a coefficient of friction of .204 with the table sitting at the edge of the table is a 3 kg object at rest the 5 kg object collides and sticks to the 3 kg
  33. Physics

    An object wuth a mass of .5 kg starts from rest and achieves a maximum speed of 20m/s in 0.01 s. What average unbalanced force accelerates this object?
  34. physic

    An object of mass m is at rest at the top of a smooth slope of height h and length L. The coefficient of kinetic friction between the object and the surface, μk, is small enough that the object will slide down the slope if given a very small push to get
  35. 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
  36. physics

    A war-wolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling pumpkins and pianos. A simple trebuchet is shown in the figure below. Model it as a stiff rod of negligible mass 3.00 m long and
  37. physics

    An object dropped from a cliff falls with a constant acceleration of 10m/s2. Find its speed 2s after it was dropped? Solution:Given ,accelaration =10m/s time=2s speed=? therfore,speed=distance travelled\total time taken s=10\2=5(ans) . is it ok.
  38. physics

    A heavy object and a light object are dropped from rest at the same time in a vacuum. Which one will reach the ground first and why?
  39. physics

    An object (point mass) is projected up an inclined plane from the bottom with an initial speed of 5.0 m/s. The plane is 0.75 m high and the coefficient of kinetic friction between the object and the plane is 0.25. For what angle of inclination would the
  40. mechanics

    An object (point mass) is projected up an inclined plane from the bottom with an initial speed of 5.0 m/s. The plane is 0.75 m high and the coefficient of kinetic friction between the object and the plane is 0.25. For what angle of inclination would the
  41. 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
  42. Physics

    1. How can the momentum of a moving object be found? A. By multiplying its mass by its acceleration. B. By dividing its change in distance trabeled by the time it travels. C. By dividing its velocity bu the time it travels. D. By multiplying its mass by
  43. Physics

    Need serious help!! 1. How can the momentum of a moving object be found? A. By multiplying its mass by its acceleration. B. By dividing its change in distance trabeled by the time it travels. C. By dividing its velocity bu the time it travels. D. By
  44. physics

    The homework question asks: which work woulf be required to stop a moving object: the intial speed, the intial kinetic energy of the object, the mass of the object times it acceleration, the mass of the object times its intials speed, or the square of the
  45. college

    A block of mass m is dropped from the fourth floor of an office building, subsequently hitting the sidewalk at speed v. From what floor should the mass be dropped to double that impact speed?
  46. 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
  47. physics

    2) Two objects, A and B, initially at rest, are "exploded" apart by the release of a coiled spring that was compressed between them. As they move apart, the velocity of object A is 5 m/s and the velocity of object B is -2 m/s. What is the ratio of the mass
  48. physics

    A block of mass m is dropped from the fourth floor of an office building and hits the sidewalk below at speed v. From what floor should the mass be dropped to double that impact speed?
  49. physics

    A 0.44 kg object connected to a light spring with a spring constant of 22.0 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. 28.28 cm/s (b) Determine
  50. physics

    A student finds that a stretched rubber band stores 3.5 J of energy. She uses it to propel an object of mass 0.025 kg vertically upwards. What will be the initial speed of the object? How high can it travel before coming momentarily to rest?
  51. physics

    A 0.43 kg object connected to a light spring with a spring constant of 21.4 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. (b) Determine the speed of
  52. 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
  53. Calculus

    An object is traveling along the x axis so that its speed is given by v(t)=t^2-7t+10 m/s. (a) Find the times when the object is at rest. (b) Find the acceleration at both of these times. Interpret the acceleration in terms of the motion of the object, ie
  54. physics

    High-performance race cars can accelerate from 0 m/s to 27 m/s (60 mi/h) in about 4 s. To see how large the acceleration due to gravity is, determine the time required for an object dropped from rest to attain a speed of 27 m/s. Ignore air resistance.
  55. 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
  56. intro to physics

    A small object of mass m = 2.25 kg is released, starting at rest, from a height h above the ground on a ramp inclined at 45.0o (see figure below). The object reaches the bottom of the ramp and enters a loop-the-loop of radius R = 1.25 m. There is no
  57. Static Fricition

    An object of mass 2k is placed on the edge of the floor of a merry go round of radius 4 meters. The coefficient of static friction is 0.4 for the floor and the object. 1.How much work (in joules) is done on the object by the static frictional force to get
  58. physics

    1. An object of mass m and initial speed v0 sliding on a horizontal frictionless surface encounters a frictionless ramp. To what vertical height will the object rise before coming to rest?
  59. Calculus

    An object is traveling along the x axis so that its speed is given by v(t)=t^2-7t+10 m/s. (a) Find the times when the object is at rest. (b) Find the acceleration at both of these times. Interpret the acceleration in terms of the motion of the object, ie
  60. Physics

    An object is attached to a hanging unstretched, ideal and massless spring and slowly lowered to its equilibrium position, a distance of 5.3 cm below the starting point. If instead of having been lowered slowly the object was dropped from rest, how far then
  61. science

    (4)_____ was a physicist who developed the Three Laws of Motion. (5)_____ states that ”the (6)_____ of an object is equal to the (7)_____ on an object divided by the mass of the object”. For example, this means that an object with a greater mass
  62. physics

    Two objects (m1 = 5.15 kg and m2 = 2.75 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 5.15-kg object is released from rest at a point h = 4.00 m above the table. (a) Determine the speed of each
  63. physics

    Two objects are connected by a light string passing over a light, frictionless pulley as in the diagram. m1 = 4.50 kg, m2 = 2.10 kg, and h = 4.30 m. The 4.50 kg object is released from rest at a point 4.30 m above the floor. Determine the speed of each
  64. PHYSICS

    Two objects (m1 = 4.90 kg and m2 = 2.75 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 4.90-kg object is released from rest at a point h = 4.00 m above the table. (a) Determine the speed of each
  65. physics

    A 0.55 kg object connected to a light spring with a force constant of 20.0 N/m oscillates on a frictionless horizontal surface. If the spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the object. (b) Determine the
  66. 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
  67. physics

    A 15 kg object and a 18 kg object are connected by a massless compressed spring and rest on a frictionless table. After the spring is released, the object with the smaller mass has a velocity of 12 m/s to the left. What is the velocity of the object with
  68. Physics

    An object of mass 1.00 kg is attached to a vertical spring with spring constant 100 N/m. The object is held at rest in a position such that the spring is stretched upward a distance 1.00 cm beyond its undisturbed length. If the object is released, how far
  69. Physics

    A 11 kg object and a 19 kg object are connected by a massless compressed spring and rest on a frictionless table. After the spring is released, the object with the smaller mass has a velocity of 12 m/s to the left. What is the velocity of the object with
  70. Physics

    A 18 kg object and a 26 kg object are connected by a massless compressed spring and rest on a frictionless table. After the spring is released, the object with the smaller mass has a velocity of 2 m/s to the left. What is the velocity of the object with
  71. physics

    An object of mass 1.6 kg is dropped from a height of 2.9 metres. It lands with a speed of 2.8 m/s. How much energy was lost due to air resistance? (Give your answer to 2 s.f., expressed as a magnitude)
  72. physics

    A war-wolf or trebuchet is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling large vegetables and pianos as a sport. A simple trebuchet is shown in the figure. Model it as a stiff rod of negligible mass, 3.05 m
  73. Physics

    The projectile launcher shown below will give the object on the right an inital horizontal speed of 7.7 m/s. While the other object will be dropped with no initial speed. The objects are initially 171 cm above the ground and separated by 142 cm. What will
  74. Physics

    The projectile launcher shown below will give the object on the right an inital horizontal speed of 8.0 m/s. While the other object will be dropped with no initial speed. The objects are initially 137 cm above the ground and separated by 142 cm. What will
  75. 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.
  76. physics

    Object 1 has a velocity of 3m/s and a mass of 5kg. Object 2 also has a mass of 5kg but isn't moving. Object 1 collides with Object 2 and they move off together. Work out their speed using the principle of conservation of momentum.
  77. physics

    an object of mass 10kg is dropped from a 20 m cliff. what is the velocity just before the object strikes the ground?
  78. Physics

    **I JUST NEED THE STEPS ON HOW TO SOLVE THE PROBLEMS** An object experiences an acceleration of 6.8m/s^2. As a result, it accelerates from rest to 24m/s. How much distance did it travel during that acceleration? A car which is traveling at a velocity of
  79. engineering physics

    An object of mass m is dropped at t=0 from the roof of a building of hdight h. A wind blowing parallel to the face of the building exerts a constant force F on the object. At what time t does the object strike the ground? Express t in terms of g and h.
  80. 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
  81. Physics

    A 3 kg object initially at rest is acted on by a non-constant force which causes it to move 3 m. The force varies with position as shown in the figure. a) How much work is done on the object by this force? b) What is the final speed of the object as it
  82. AP physics

    A uniform spherical shell of mass M and radius R rotates about a vertical axiss on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia I and radius r, and is attached to a small object mass m.
  83. AP Physics

    A uniform spherical shell of mass M and radius R rotates about a vertical axiss on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia I and radius r, and is attached to a small object mass m.
  84. Physics

    A Stone Of Mass 1kg Is Dropped From Rest From A Window 20m Above The Ground.Another Stone Of Mass 0.5kg Is Dropped From A Height Of 5m Above The Ground . If Both Stones Are Dropped At The Same Time,find The Time Interval That That Elapses Between The Two
  85. physics

    An object starts from rest and accelerates uniformly down an incline. If the object reaches a speed of 40 m/s in 5 seconds, what is its average speed?
  86. physics

    A 0.46 kg object connected to a light spring with a spring constant of 18.0 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. unit = cm/s (b) Determine
  87. physics

    A man in a boat moving at constant speed of 60km/h relative to the shore throws an object in the forward direction with a speed of 30km/h. What is the speed of the object as measured by an observer at rest at the shore?
  88. physics

    A man in a boat moving at constant speed of 60km/h relative to the shore throws an object in the forward direction with a speed of 30km/h. What is the speed of the object as measured by an observer at rest at the shore?
  89. Physics

    A 3.0kg object originally at rest explodes and splits into three fragments. One fragment has a mass of .50kg and flies off along the negative x-axis at a speed of 2.8m/s, and another has a mass of 1.3kg and flies off along the negative y-axis at a speed of
  90. Physics

    A small object, which has a charge q = 6.7 µC and mass m = 9.60 10-5 kg, is placed in a constant electric field. Starting from rest, the object accelerates to a speed of 2.06 103 m/s in a time of 1.03 s. Determine the magnitude of the electric field.
  91. Physics

    The projectile launcher shown below will give the object on the right an inital horizontal speed of 9.40 m/s. While the other object will be dropped with no initial speed. The objects are initially 114 cm above the ground. What will be the difference in
  92. 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
  93. kashinath palod

    an object of mass 3 kg is at rest. Now a force of vectorS = 6t2^i + 4tj^ is applied on the object then velocity of object at t = 3 sec. is?
  94. physics

    An object is dropped from ret from a height of 39.4m. What is its average acceleration (assumed to be constant) if it hits the ground with a speed of 1.61m/s? My quesion is, is a not 9.8 since gravity is acting on the object.
  95. Physics

    The projectile launcher shown below will give the object on the right an inital horizontal speed of 12.10 m/s. While the other object will be dropped with no initial speed. The objects are initially 77 cm above the ground. What will be the difference in
  96. Physics

    An object of mass .550kg is lifted from the floor to a height of 3.5m at a constant speed. If the object is released from rest after it is lifted, what is its kinetic energy just before it hits the floor? What is its velocity? Show your work and units.
  97. adult education

    An oblique collision occurs between two objects with a similar rectangular shape (1m x 0.2m) as shown below. The first object has a mass of 10 kg and is initially traveling at 4 m/s. The second object has a mass of 6 kg and is initially at rest. The impact
  98. Physics

    An object of mass 1.4kg is placed 11.5 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the object remains fixed on the turntable until a rate of 37 rpm is reached, at which point the object
  99. Physics

    An object of mass 1.4kg is placed 12.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the object remains fixed on the turntable until a rate of 36 rpm is reached, at which point the object
  100. physics

    A ball of mass m=0.25 kg is dropped from rest. What is the speed of the ball after it falls two meters?

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