# A man drop a stone of mass 2kg room the top of a building of height 15m when it reaches the ground find its kinetic energy

69,614 results
1. ## science

Two stones are launched from the top of a tall building. One stone is thrown in a direction 30.0degree above the horizontal with a speed of 10.0m/s ; the other is thrown in a direction 30.0degree below the horizontal with the same speed. Which stone lands

2. ## Physics

Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands twice as far from the base of the building from which it was thrown as does the other stone. Find the ratio of the height of the taller building

3. ## PHYSICS

A stone thrown from the top of a building is given an initial velocity of 40.0 m/s straight upward. The building is 70.0m high, and the stone just misses the edge of the roof on its way down, determine (A) The time at which the stone reaches its maximum

4. ## Calculus

To estimate the height of a building, a stone is dropped from the top of the building into a pool of water at ground level. How high is the building if the splash is seen 6.7 seconds after the stone is dropped? Use the position function for free-falling

5. ## physics

A stone is dropped from the roof of a tall building. A person measures the speed of the stone to be 49 m/s when it hits the ground. What is the height of the building?

6. ## Physics

a boy throws a stone vertically up to a man standing at a height of 2.0m above the boy. If the stone is thrown up with a velocity of 7.0metres per second what is the velocity of the stone at the instant when it is caught by the man A. 3.0m/s B. 6.2m/s C.

7. ## precal

A contractor needs to know the height of a building to estimate the cost of a job. From a point 84 feet away from the base of the building, the angle of elevation to the top of the building is found to be 44 degrees and 23'. Find the height of the

8. ## physics

A stone is thrown from the top of a building upward at an angle of 30.0∘to the horizontal and with an initial speed of 20.0 m/s. If the height of the building is 45.0 m, what is the speed in m/sec of the stone just before it strikes the ground ?

9. ## Science

A man drop a stone of mass 2kg room the top of a building of height 15m when it reaches the ground find its kinetic energy.

10. ## math

a plat form and a building are on the same horizontal plane , the angle of depression of the bottom of the building from the top A of the platform is 39 degree. the angle of elevation of the top D of the building from the top of the platform is 56 degree.

11. ## SCIENCE

A stone thrown from the top of a building is given an initial velocity of 40.0 m/s straight upward. The building is 70.0m high, and the stone just misses the edge of the roof on its way down, determine (A) The time at which the stone reaches its maximum

12. ## physics

A mass m = 76.0 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.7 m and finally a flat straight section at the same height as the center of the loop (19.7 m off the ground). Since the mass would not make it

13. ## civil engineering

A stone (on the edge of the roof) thrown from the top of a building is given an initial velocity of 20.0 m/s straight upward. The building is 50.0 m high, as shown in Fig. 4. Using tA = 0 as the time the stone leaves the thrower’s hand at position ○A .

14. ## physics

A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it

15. ## Physics

Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands four times as far from the base of the building from which it was thrown as does the other stone. Find the ratio of the height of the taller

16. ## physics

A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it

17. ## queen's science Academy

A stone is dropped from the top of a tall building and at the same time another stone is thrown vertically upward from the ground level with a velocity of 20m/s the stones meet exectity 2s after their release how tall is the building

18. ## physics

A mass m = 76.0 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.7 m and finally a flat straight section at the same height as the center of the loop (19.7 m off the ground). Since the mass would not make it

19. ## math- bc calc

a building is 36 ft tall. A pulley is attached to the top of the building. A rope is looped through the pulley. One end of the rope is attached to the lantern that hangs vertically parallel to the side of the building. The rope passes up vertically from

20. ## engineering science n2

A stone with a mass of 6kg is thrown vertically upwards from the top of a building 35m high with a starting velocity of 20m/s. The time it will take to reach its maximum height

21. ## Math

17.Which roller coaster has the greatest lift height Top Thrill Dragster 18.What is the median lift height for the roller coasters lifted? Round to the nearest tenth. Not sure for this one 19.Arrange the given roller coasters from least to greatest lift

22. ## science

a stone is thrown at an angle of 30* with the horizontal direction which strikes the tip of the building 2 m height ,if the distance of the building from the point of observation is 10 metre .find the velocity of the projectile of the stone.

23. ## physics

While standing on top of a 220. m tall building, you see Iron Man flying straight down toward the ground at a speed of 30.0 m/s. Just as he passes you, you drop a can of Dr Pepper off the roof. How fast is the can going when it passes Iron Man?

24. ## physics

While standing on top of a 256 m tall building, you see Iron Man flying straight down toward the ground at a speed of 32.0 m/s. Just as he passes you, you drop a can of Dr Pepper off the roof. How fast is the can going when it passes Iron Man?

25. ## Physics

A stone is thrown vertically upward from the top of the tower with a velocity of 15m / s. Two seconds later a second stone is dropped from the top of the tower.if both the stone strike the ground simultaneously find the height of the tower

26. ## Precalculus

A contractor needs to know the height of a building to estimate the cost of a job. From a point 92 feet away from the base of the building, the angle of elevation to the top of the building is found to be 40°32’. Find the height of the building. Round

27. ## physics

Stones are thrown horizontally, with the same initial velocity, from the tops of two different buildings, A and B. The stone from building A lands 4 times as far from the base of the building as does the stone from building B. What is the ratio of building

28. ## Nothern Cape collage

A stone with a mass of 2kg is thrown vertically upwards.it takes 5 seconds for the stone to reach the same height from which it was thrown. Determine th following:3.2.1 the volocity with which the stone was thrown

29. ## Physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 24.0° above the horizontal. The stone hits the ground 4.40 s later, 104 m away from the base of the building. (Ignore air resistance.) Find the initial velocity of the stone and

30. ## physics

Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands twice as far from the base of the building from which it was thrown as does the other stone. Find the ratio of the height of the taller building

31. ## Physics

A man chased by the army, leaps with speed 12 m/s at a 47 degree angle above the horizontal from the top of a building. If he lands 40.0 m from the base of the building, then finds the height of the building

32. ## maths

from the top of a building 10metres high the angle of depression of a stone lying on the horizontal ground is 69degrees.calculate the distance of the stone from the foot of the building in metres to 1 decimal place

33. ## Physics

Yo-Yo man releases a yo-yo from rest and allows it to drop, as he keeps the top end of the string stationary. The mass of the yo-yo is 0.056 kg, its moment of inertia is 2.9 X 10^-5 kg X m^2 and the radius r of the axle the string wraps around is 0.0064 m.

34. ## PHYSICS

a stone of mass 0.5kg is drop from a height of 12m. calculate; it's kinetic energy. (g=10m/s2).

35. ## Dynamics

A stone is thrown vertically upward from the top of a 30m high building with a velocity of 15m/s. Taking the acceleration of stone as 9.81 m/s2. And taking that as constant, determine a) the velocity v and elevations sy of stone above the ground at any

36. ## physic

a stone is drop from the top of a building and at thesame time a second stone is thrown vertically upward from the botom of the building at a speed of 20m/s, they passed each other 3s later. find the hight of the building.

37. ## Uniswa

A stone thrown from the top of a building which is 30m is given an initial velocity 20m/s verticaly upward.the stone misses the edge of the building on its way down. A,what is the velocity of the stone after 1second,n after 3seconds. B,find the maximum

38. ## physics

a stone is thrown vertically upward an initial velocity of 12m/s from the top of a building . it takes 3.4s for the stone to hit the ground a. find the height of the building b. find the maximum height that the stone will reach c. find the speed of the

39. ## physics

Stones are thrown horizontally, with the same initial velocity, from the tops of two different buildings, A and B. The stone from building A lands 4 times as far from the base of the building as does the stone from building B. What is the ratio of building

40. ## Math

From the top of a 200 foot building, a bird is sighted overhead and a man is observed directly below the bird at ground level. The angle of elevation of the bird is 16*, and the angle of depression of the man is 43* find : a) the distance from the top of

41. ## Science

A stone with a mass of 6kg is thrown vertically upwards from the top of the building 35m high with a starting velocity 20m/s . Determine the time it will take the stone to reach it's maximum height.

42. ## calculus

use to postion function s(t) = -4.9t^2 + vt + s for free-falling objects to estimate the height of a building, a stone is dropped from the top of the building into a pool of water at ground level. How high is the building if the splash is seen 6.8 seconds

43. ## calculus

use to postion function s(t) = -4.9t^2 + vt + s for free-falling objects to estimate the height of a building, a stone is dropped from the top of the building into a pool of water at ground level. How high is the building of the splash is seen 6.8 seconds

44. ## Math

From the top of a 200 foot building, a bird is sighted overhead and a man is observed directly below the bird at ground level. The angle of elevation of the bird is 16*, and the angle of depression of the man is 43* find : a) the distance from the top of

45. ## algebra

If a stone is tossed from the top of a 310 meter building the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310 where t is in seconds and height is in meters. After how many seonds will the stone hit the ground? Round to the

46. ## physical sciences (motion in two dimensions)

John stand at the top of a 30m building. He throws a stone upwards with a speed of 5m/s. Calculate. (1)how long the stone is in the air. (2)the maxi mum height the stone reaches the ground?

47. ## Physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 24.0° above the horizontal. The stone hits the ground 4.40 s later, 104 m away from the base of the building. (Ignore air resistance.) Find the initial velocity of the stone.

48. ## physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 30.0° above the horizontal. The stone hits the ground 4.10 s later, 112 m away from the base of the building. (Ignore air resistance.) (a) Find the initial velocity of the stone.

49. ## Physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 20.0° above the horizontal. The stone hits the ground 4.60 s later, 104 m away from the base of the building. (Ignore air resistance.) What is the maximum height H reached by the

50. ## math

if a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t)=-0.8t^2-10t+330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground?

51. ## Physics

A girl throws a stone form the top of a building with an initial velocity of 20.0 m/s upward. The building is 50.0 m high and the stone just misses the edge of the roof on its way down. Draw a v vs t graph, find time needed for stone to reach max height,

52. ## Math

If a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+330, where t is in seconds, and height is in meters.After how many seconds will the stone hit the ground? round to the

53. ## intermediate algebra

if a stone is tossed from the top of a 310 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310. where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the

54. ## Math

If a stone is tossed from the top of a 230 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 230, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

55. ## math

If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

56. ## math

If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

57. ## algebra

If a stone is tossed from the top of a 230 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 230, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

58. ## Algebra

If a stone is tossed from the top of a 290 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 290, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

60. ## math

If a stone is tossed from the top of a 210 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 210, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

61. ## math

f a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

62. ## physics

A stone is dropped off the science building and accelerates, from rest, toward the ground at 9.8 m/s/s. A curious physics student looks out the third floor window as the stone falls past. She happens to have a stopwatch and she finds that it takes 0.30 sec

63. ## Physics

A stone is dropped off the science building and accelerates, from rest, toward the ground at 9.8 m/s/s. A curious physics student looks out the third floor window as the stone falls past. She happens to have a stopwatch and she finds that it takes 0.30 sec

64. ## physics

A stone is thrown from a building of height 40m and reaches a maximum height of 49m from the ground. The stone strikes the ground at a distance of 10m from the foot of the building. find the angle of elevation from which the stone is projected. Assuming

65. ## physical science

A stone of 8 kg mass falls from the top of an 80 m-high building. Find the velocity of the stone when it reaches the ground

66. ## Physics

(1)A battery drives 60c of charge in a circuit for 20s. Thecurrent in the circuit is?(2)What is the volume of a block of expanded polystyrene of 400g and density 16kg/m3?(3)The velocity of a toy car of mass 2kg increased from 5m/s to 10m/s in 2seconds.What

67. ## physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 26.1° above the horizontal. The stone hits the ground 4.25 s later, 103m away from the base of the building (b) Find the initial velocity of the stone. (c) Find the initial

68. ## Motion equation

A stone, which weighs 0.62kg, is thrown, at 5.5ms, its kinetic energy at its maximum height above the surface is 2.3J, what is the height of the stone at this point? Any eqautions or advice gratefully received. I assume that is 5.5 m/s, the initial

69. ## physics

a man stand on the top of the building 490 m above the ground.he throws a stone horizontally with speed15 m/s.find the time taken by the stone to reach the ground &the speed with which it hits the ground

70. ## math

If a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

71. ## Physics

A 2kg stone is ejected upwards at an angle of 35 degrees with an initial velocity of 8 m/s from a cannon with an unknown initial height and lands on top of a platform that is 3 meters tall. The horizontal distance from the cannon to the platform is 7

72. ## Physics

You are standing on top of a building that is 75-m high and you throw a 3-kg stone horizontally at a speed of 5.4-m/s. How far from the base of the building will the stone land? (the ground is flat)

73. ## Physics

You are standing on top of a building that is 75-m high and you throw a 4-kg stone horizontally at a speed of 6.6-m/s. How far from the base of the building will the stone land? (the ground is flat)

74. ## math

A man is standing 35 m from a building. On top of the building is a flg. From the man, the angle of elevation of the top of the building is pi/6 radians and the angle of elevation of the top of the flag is pi/3 radians. Determine an exact expression for

75. ## PHYSICS

A mass of 2kg is dropped from a height of 3m.Neglecting air resistance,KE of the stone just b4 it hits the ground is ?

76. ## calc

a stone is thrown striaght up from the roof of an 80 foot building. the height of the stone above the ground t seconds later is giving by the function h(t)=-16t^2 + 64t +80 during what time is the stone rising? when is the stone falling? what is the

77. ## calculus

A stone thrown up from the top of a building with a velocity of 48 meter per second reaches the ground with a velocity of -50 m/s. Find the height of the building. Using the derivative of approximation.

78. ## physics

A man of mass 70kg carries a mass of 10kg to the top of a building 100m high.Calculate work done by the man.Take g=10m/s

79. ## science

a stone is thrown at an angle of 30* with the horizontal direction which strikes the tip of the building 2 m height ,if the distance of the building from the point of observation is 10 metre .find the velocity of the projectile of the stone. ans...

80. ## physics

While standing on top of a 323 m tall building, you see Iron Man flying straight down toward the ground at a speed of 35.0 m/s. Just as he passes you, you drop a can of Dr Pepper off the roof. How fast is the can going when it passes Iron Man?

81. ## Algebra

A stunt man drops from the top of a 50 foot elevator shaft. His height above ground is determined by the equation h=-16(t)(t)+50. At the moment the stunt man begins to drop, an elevator goes up so that its height above ground is determined by the equation

82. ## Algebra

A stunt man drops from the top of a 50 foot elevator shaft. His height above ground is determined by the equation h=-16(t)(t)+50. At the moment the stunt man begins to drop, an elevator goes up so that its height above ground is determined by the equation

83. ## Math

A man standing on top of a 100 foot building sites the top of a nearby building at an angle of elevation of 3.14/8. If he knows the nearby building is 160 feet high,what is his horizontal distance from that building.

84. ## Physics

A stone is dropped from the root of a building. A person in the building observes that the stone crosses his window that is 2 meters tall in a time of 0.2 second. How far is the roof from the top of the window?

85. ## science

a 2kg stone is dropped from the top of a 20 buliding (a) at what height does its potential energy energy equal to its kinetic energy?

86. ## science(physics)

A 2kg stone is droped from the top of a 20m building a)what potential energy does it posses b)At what height does its potential energy become equal to its kinetic energy? c)what is its kinetic energy just before it hits the ground? d)With what velocity

87. ## PSU

A 2.3kg stone is thrown from ground directly upward. the maximum height reached by the stone is 45m. Neglecting air resistance, a) with which initial speed was the stone thrown? b)what is the flight time of the stone until it hits the ground again? c)what

88. ## algebra

If a stone is thossed from the top of a 230 meter building, the height of the ston as a function of time is given by h(t)=9.8t^2-10t+230 t is seconds and h in meters. How many seconds will the stone hit the ground?Round to the nearest hundredreths place

89. ## Physics

A stone is drop from a height 19.6m above the ground while a second stone is simultaneously projected from the ground with sufficient velocity to enable it to accept 19.6m. When and where the stone will meet

90. ## physics

a man of 70kg carries a mass of 10kg to the top of a building 100m high.calculate work done by the man.take g=10m/s

91. ## physic

A stone drop from the edge of the roof of a multistoried building. Calculate the teme taken by the pot cross to a particular distance AB of height 2.9m, the upper point A being 19.6m below the roof.

92. ## Intermediate algebra

If a stone is tossed from the top of a 230 meter building; the heigth of as a function of time is given by h(t)=-9.8t^2-10t+230, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest

93. ## physics

A mass m = 88.0 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.8 m and finally a flat straight section at the same height as the center of the loop (15.8 m off the ground). Since the mass would not make it

94. ## Maths

A platform and building are on thesame plane. The of angle of depression of the bottom(c) of the building from the top(a) of the platform is 39degree. The angle of elevation of the top(o)of the building from the top of the platform is 56. Given that the

95. ## physics

a man stands on the roof of a building and throws a stone upwards at 15 ms-1. after what time will the stone hit the ground 20m below

96. ## physics

You drop a stone from the top of a cliff that is 20 meters tall. Compute how long it will take for the stone to reach the bottom using various different choices for your coordinate system.

97. ## college physics

A stone is thrown horizontally from the top of a building with a speed of 29.5 m/sec. It lands 56.3 meters from the base of the building. How long was it in the air, and how tall is the building?

98. ## Dynamics

A stone is thrown vertically upward from the top of a 30m high building with a velocity of 15m/s. Taking the acceleration of stone as 9.81 m/s2. And taking that as constant, determine a) the velocity v and elevations sy of stone above the ground at any

99. ## Scinece, Physics

A boy is throwing a stone from the top of a building. It takes projectile motion and returns to the ground. How to calculate the height of buiding?

100. ## physics

A stone with mass m = 2.3 kg is thrown vertically upward into the air with an initial kinetic energy of 190 J. The drag force acting on the stone throughout its flight is constant, independent of the velocity of the stone, and has a magnitude of 2.3 N.
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