# A projectile is launched horizontally with a speed of 80.0 m/s. If the projectiles is launched above the floor, how long does it take the projectile to hit the floor?

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1. ## Physics

In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that in the figure below and has a range of 15 m. Suppose the launch speed is doubled, and the projectile is fired at the same

2. ## Physics

A projectile is launched vertically from the surface of the Moon with an initial speed of 1500. At what altitude is the projectile's speed one-half its initial value?

3. ## Algebra

The function H(t) = -16t2 + vt + s shows the height H (t), in feet, of a projectile launched vertically from s feet above the ground after t seconds. The initial speed of the projectile is v feet per second. Part A: The projectile was launched from a

4. ## physics

a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?

5. ## Physics

Two projectiles are launched from ground level at the same angle above the horizontal, and both return to ground level. Projectile A has a launch speed that is twice that of projectile B. (Sketch trajectories of projectiles). Assuming that air resistance

6. ## PHYSICS HELP!!

An object is launched from the ground into the air at an angle of 38.0 o (above the horizon) towards a vertical brick wall that is 15.0 m horizontally from the launch point. If the ball takes 1.30 seconds to collide with the wall, with what speed was the

7. ## Physics- i need to know how to do these problems

Two projectiles are launched from the ground, and both reach the same vertical height. However, projectile B travels twice the horizontal distance as projectile A before hitting the ground. a. How large is the vertical component of the initial velocity of

8. ## Algebra

A projectile is launched upward with a velocity of 128 feet per second from the top of a 50- foot platform. What is the maximum height attained by the projectile?

9. ## PHYSICS

Two spheres are launched horizontally from a 1.1m -high table. Sphere A is launched with an initial speed of 5.0M/S . Sphere B is launched with an initial speed of 3.0M/S A. What is the time for the sphere A to hit the floor? and sphere B to hit the ground

10. ## physics

A projectile is launched vertically from the surface of the Moon with an initial speed of 1210 m/s. At what altitude is the projectile's speed two-fifths its initial value?

11. ## Physics

A projectile is launched from the earth’s surface at initial speed v0 at angle θ0 with the horizontal. When the projectile is at its maximum height h, it has half the speed it had when it was at half its maximum height (h/2). At what angle was the

12. ## Physics

A projectile is launched horizontally with a speed of 80.0 m/s. If the projectile is launched 1.5m above the floor, how long does it take the projectile to hit the floor?

The height in metres of a projectile launched from the top of a building is given by h(t) =- 5t2 + 10t+5 where t is the time in seconds since it was launched. a) How high was the projectile at the moment of launch? b) At what time does the projectile hit

14. ## physics

After landing safely on the target the cat tries another projectile apparatus. This time the cat is shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55º0 and can be assumed to be at ground level during launch. With what speed

15. ## math

The height in meters of a projectile launched from the top of a building is given by h(t)=-5t^2+60t+15, where t is time in seconds since it was launched. a) How tall is the building? b) At what time does the projectile hit the ground? C)What is the

16. ## Physics

An acrobat is launched from a cannon at an angle of 60 degrees above the horizontal. The acrobat is caught by a safety net mounted horizontally at the height from which he was initially launched. Suppose the acrobat is launched at a speed of 26 m/s a) how

17. ## physics

After landing safely on the target the cat tries another projectile apparatus. This time the cat is shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55º0 and can be assumed to be at ground level during launch. With what speed

18. ## physics

Why projectiles launched at complimentary angles have the same range?

19. ## Physics

PROJECTILE LAUNCHED FROM EARTH'S SURFACE? A projectile is shot straight up from the earth's surface at a speed of 1.20×10^4km/hr. How high does it go? (answer in km) Supposed to solve this using F=G(mm/2r)...?

20. ## Physics

In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that shown in Figure 3.10 and has a range of 29 m. Suppose the launch speed is doubled, and the projectile is fired at the same

21. ## intermediate algebra

A projectile is launched directly upward from the top of a 112 - foot building with an initial velocity (speed) of 96 feet per second. This translates to the h(t) = -16t^2 + 96t + 112 where h(t) is the height of the projectile in feet and t is the time in

22. ## physics

The highest barrier that a projectile can clear is 12.7 m, when the projectile is launched at an angle of 17.5° above the horizontal. What is the projectile's launch speed?

23. ## physics

three more questions: 1) A 1.50kg projectile is launched at 18.0m/s from level ground. The launch angle is 26 degrees above the horizontal. (Assume negligible friction) a) What is the maximum height reached by this projectile? b) How was will the

24. ## Physics

A projectile is launched with an initial speed of 59.0 m/s at an angle of 32.0° above the horizontal. The projectile lands on a hillside 3.80 s later. Neglect air friction. (Assume that the +x-axis is to the right and the +y-axis is up along the page.)

25. ## College physics

A projectile is launched vertically from the surface of the Moon with an initial speed of 1400 . At what altitude is the projectile's speed one-half its initial value? do you use the equation Ei = Ef and vf would be 700 E= 1/2 mv^2 -G (Mass of the

26. ## Physics

A projectile is launched with a speed Vo at an angle 45° with horizontal find ratio of its minimum and maximum K.E ?

27. ## Physics

A projectile is launched with an initial speed of 40m/s at an angle of 25 degrees above the horizontal. The projectile lands 3 sec. later. Neglect air friction. What is the projectile's velocity at the highest point of it's trajectory? What is the straight

28. ## Physics

Two projectiles are launched form ground elvel at the same angle above the horizontal, and both return to groudn level. Projectile A has a launch speed that is twice that of projectile B. What are the ratios of the maximum heights of the balls? What are

29. ## physics

A 3Kg projectile is fired straight upward from earth's surface with a speed that is one-fourth the escape speed. Neglecting air resistance. a) What is the Kinetic energy of this projectile when it is launched? b) what is the gravitational potential energy

30. ## physics

projectile is launched horizontally from edge of cliff 20 m high with an initial speed of 10 m/s. what is the horizontal distance the projectile travels before striking the level ground below the cliff? what formula do i use?

31. ## science- physics

Two spheres are launched horizontally from a 1.1 m -high table. Sphere A is launched with an initial speed of 4.5 m/s . Sphere B is launched with an initial speed of 1.5 m/s . What is the distance that sphere A travels from the edge of the table? What is

32. ## Science

Two satellites are launched at a distance R from a planet of negligible radius. Both satellites are launched in the tangential direction. The ﬁrst satellite launches correctly at a speed v0 and enters a circular orbit. The second satellite, however, is

33. ## physics

The range R of a projectile is defined as the magnitude of the horizontal displacement of the projectile when it returns to its original altitude. (In other words, the range is the distance between the launch point and the impact point on flat ground.) A

34. ## physics

a projectile launched horizontally hits the ground in .6 seconds. if it had been launched with a much lower speed in the same direction, it would have hit the ground in

35. ## physics

Determine the launch speed of a horizontally-launched projectile which lands 27.4 meters from the base of a 17.9-meter high cliff.

36. ## Pre-Calculus

Hello, A projectile is launched straight up from the ground with an initial velocity of 320 ft/sec. a. When will the projectiles height above the ground be 1024 ft? For this I got 16 seconds b. When will the height of the projectile be at least 24 ft? I am

37. ## math

A projectile is launched vertically upward from the top of a 240-foot building. This translates to the model y = -16t^2 + 32t + 240 where y is the height in feet and t is the time in seconds after it was launched, When will the projectile hit the ground?

38. ## physics

The highest barrier that a projectile can clear is 13.4 m, when the projectile is launched at an angle of 11.0o above the horizontal. What is the projectile’s launch speed?

39. ## physics

what is the initial velocity (Vyo) of a projectile launched horizontally? why? i know that it is 0 m/s, but i don't know why/how to explain it.

40. ## physics

A projectile is launched with a speed of 41 m/s at an angle of 55° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight.

41. ## physics. HELP

A projectile is launched horizontally with a speed of 80.0 m/s. If the projectiles is launched above the floor, how long does it take the projectile to hit the floor?

42. ## phyics

A projectile is launched horizontally with a speed of 80.0 m/s. If the projectiles is launched above the floor, how long does it take the projectile to hit the floor?

43. ## physics. HELP

A projectile is launched horizontally with a speed of 80.0 m/s. If the projectiles is launched above the floor, how long does it take the projectile to hit the floor?

44. ## Physics

A projectile is launched with an initial speed of 80.0m/s at an angle of 40 degrees above the horizontal. The projectile lands on a hillside 3.80s later. Neglect air friction. What is the projectile's velocity at the highest point of its trajectory? What

45. ## Projectile Motion Help

I was wondering if you could help me solve this projectile motion problem. A projectile is launched with an initial speed of 14.5 m/s at an angle of 35° above the horizontal. The object lands at the same height from which it was launched. Air resistance

46. ## Physics

A projectile is launched horizontally from a cliff and has initial speed 30 m/s. The projectile will hit the ground 10 s later. What is the horizontal component of the projectile's velocity 5.0 s after launch. Assume air resistance is negligible.

47. ## Physics

A projectile is fired up into the air at a speed of 164 m/s at an angle of 37° relative to the horizontal. Ignore air drag. A.) Determine the MAXIMUM HEIGHT (above where it was thrown) the projectile will reach. m B.) Determine how LONG the projectile

48. ## physics

A projectile is launched at ground level with an initial speed of 56.0 m/s at an angle of 35.0° above the horizontal. It strikes a target above the ground 2.90 seconds later. What are the x and y distances from where the projectile was launched to where

49. ## Physics Projectile Motion

A projectile is launched at ground level with an initial speed of 51.5 m/s at an angle of 35.0° above the horizontal. It strikes a target above the ground 2.50 seconds later. What are the x and y distances from where the projectile was launched to where

50. ## Physics

A projectile is launched at ground level with an initial speed of 51.5 m/s at an angle of 35.0° above the horizontal. It strikes a target above the ground 2.50 seconds later. What are the x and y distances from where the projectile was launched to where

51. ## physics

A projectile is being launched from ground level with no air resistance. You want to avoid having it enter a temperature inversion layer in the atmosphere a height h above the ground. 1) What is the maximum launch speed you could give this projectile if

52. ## physics

A projectile is launched at an angle of 54.6 degrees above the horizontal with an initial speed of 225 m/s and lands at the same level from which it was launched. The range is 205 meters. The time of flight is how many seconds?

53. ## physics

Two spheres are launched horizontally from a 0.8 m high table. Sphere A is launched with an initial speed of 16 m/s. Sphere B is launched with an initial speed of 8 m/s.

54. ## physics

A projectile is launched off of a 18.6 m high cliff with a velocity of 12.8 m/s. If the projectile is launched at an angle of 20° above the horizontal, how far did it travel horizontal before it hit the ground below?

55. ## Calculus I

Any help on how to solve this? The range of a projectile launched at an angle θ from the ground with velocity v0 is given by R(θ) = [v0^2 sin 2(θ)]/9.81 . If the projectile is launched at an angle of θ = π/6, use differentials to approximate the

56. ## Physics

A projectile is launched horizontally from a height of 2.2 meters at 35 m/s. How far will it travel horizontally before it hits the ground?

57. ## physics

The highest barrier that a projectile can clear is 11.5 m, when the projectile is launched at an angle of 15.4° above the horizontal. What is the projectile's launch speed?

58. ## physics

The highest barrier that a projectile can clear is 15.8 m, when the projectile is launched at an angle of 13.4° above the horizontal. What is the projectile's launch speed?

59. ## general physics

The highest barrier that a projectile can clear is 18.8 m, when the projectile is launched at an angle of 59.0 ° above the horizontal. What is the projectile's launch speed?

60. ## memorial university

The highest barrier that a projectile can clear is 13.8 m, when the projectile is launched at an angle of 14.9° above the horizontal. What is the projectile's launch speed?

61. ## Physics

The highest barrier that a projectile can clear is 14.5 m, when the projectile is launched at an angle of 31.0 ° above the horizontal. What is the projectile's launch speed?

62. ## Physics

The highest wall that a projectile can clear is 17m, when the projectile is launched at an angle of 35.0 degrees above the horizontal. What is the projectile's launch speed?

63. ## physics

Two balls A and B of mass 2kg are launched through the air from the same height (3m) and at same speed (4 m/s). If the ball A is launched straight upwards, and the ball B is launched horizontally, what is the ratio of their final velocities when they hit

64. ## Physics

a projectile is launched in the horizontal direction. It travels 2.050 m horizontally while it falls 0.450 m vertically, and it then strikes the floor. What was the original velocity of the projectile? How long was it in the air?

65. ## physics

A projectile is launched at an angle of 58.5 degrees above the horizontal and lands at the same level from which it was launched 3.88 seconds later. what is the magnitude of the initial velocity?

66. ## Differential Equations

A projectile was launched from the ground with a certain initial velocity. Militaries used a radar to determine the vertical coordinate y(t) of the projectile for two moments of time t measured in seconds from the moment when the projectile was launched.

67. ## Physics

A projectile is launched at an angle of 34.0o above the horizontal. The projectile has a mass of 1.50 kg and is given an initial speed of 20.0 m/s. a) What is the initial kinetic energy of the projectile? b) By how much does the gravitational potential

68. ## Physics

A projectile is launched with an initial speed V0. At its highest point, the projectile's speed is V0/2 . What was the launch angle above the horizontal? (in deg)

69. ## Physics

A projectile is launched with an initial speed . At its highest point, the projectile's speed is . What was the launch angle above the horizontal? (in deg)

70. ## Physics

A projectile on level ground is launched with a certain speed vi and has a downrange distance of vx what is its new downrange distance if it is launched with a speed of 4vi instead?

71. ## Exploring Space

if a satellite were to be launched with too little speed or too much speed then what would happen? If a sattellite were to be launched with too much speed then the friction in the air would make it heat up to the point where it would burn up. Earth's

72. ## Physics

A projectile was launched 64° above the horizontal, attaining a height of 10 m. What is the projectile's initial speed?

73. ## physics

One projectile is launched horizontally while another is dropped from rest at the same time. Which will hit the floor first?

I tried all the formulas i know but i cannot answer it I really need your help in this question.. A projectile was launched 64° above the horizontal, attaining a height of 10 m. What is the projectile's initial speed?

75. ## Physics

A projectile is launched at an angle of 20.0 degrees above the horizontal with an initial speed of 88.1 m/s. The maximum height reached by the projectile will be ____ m.

76. ## Physics

A projectile is launched with a speed of 35 m/s at an angle of 58° above the horizontal. Find the maximum height reached by the projectile during its flight by using conservation of energy. m

77. ## physics

A projectile is launched with a speed of 41 m/s at an angle of 60° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight. m

78. ## math

A projectile is launched vertically upward from the top of a 240-foot building. This translate to the model y = -16t^2 + 32t + 240 where y is the height in feet and t is the time in seconds after it was launched. When will he projectile hit the ground?

79. ## MATH

A projectile is launched vertically upward from the top of a 240-foot building. This translate to the model y = -16t^2 + 32t + 240 where y is the height in feet and t is the time in seconds after it was launched. When will he projectile hit the ground?

80. ## physics

A projectile is launched with an initial speed of 70 m/s at an angle of 35° above the horizontal on flat ground. Neglect air friction. A)What is the projectile's velocity at the highest point of its trajectory?

81. ## physics

True/False (#1 only) 1)The horizontal motion of a horizontally launched projectile affects its vertical motion. False 2)The path of a projectile through space is called its. Trajectory

82. ## Physics

A projectile is launched vertically from the surface of the Moon with an initial speed of 1130 m/s. At what altitude is the projectile's speed three-fourths its initial value?

83. ## physics

A projectile with mass of 139 kg is launched straight up from the Earth's surface with an initial speed vi. What magnitude of vi enables the projectile to just reach a maximum height of 5.8RE, measured from the center of the Earth? Ignore air friction as

84. ## Physics

A volleyball is sent over a net, having been launched at a speed 5 m/s at an angle 42.7 degrees above the horizontal, from the ground. What is the ball’s speed, in m/s, 2.97 seconds after being launched?

85. ## Science

A horizontal projectile with mass of 19.0kg is launched from a height of 7.0m above ground level with a horizontal speed of 250.0m/s. A)During projectile's flight, what forces are acting on it? B)What are the sizes & directions of the forces? C)Assuming

86. ## Physics

A projectile is launched upward at 26m/s at 30 degrees from the horizontal. The whole path of the projectile takes place over level ground. How much time will the projectile be in the air?

87. ## physics

An object is launched at a speed of 15 m/s. If it rises to a height of 2 m, at what angle was it launched?

88. ## physics

A certain projectile is launched with an initial speed Vo. At its highest point its speed is Vo / 6. What was the launch angle?

89. ## Physics

A projectile of mass m is launched from the ground at time t = 0, with speed v0, at angle theta0 above the horizontal. Aerodynamic drag is negligible. Write the kinetic, potential, and total energies of the projectile as explicit functions of time.

90. ## physics

a projectile is launched outward at an angle theta above an incline plane elevated an angle alpha above the horizon. when the projectile hits the plane it is moving horizontally. prove for this case that the angle theta must satisfy the following

91. ## Physics

A projectile is launched from a compressed spring on an inclined plane. The spring constant of the spring is k= 10 N/m, the mass is 1kg and the plane is inclined 30 degrees to the horizontal. If the spring is compressed 15 cm what will be the velocity of

92. ## Physics

Show that the projectile angele thita for a projectile launched from origin is given by thita= tan^ minus 1(4H/R). Whete H is the maximum height attained by the projectile and R is the range

93. ## phys

a projectile is launched at 35 degrees above the horizontal with an initial velocity of 120m/s. What is the projectile's speed 3 seconds later? Figure the new vertical velocity at t=3. then the speed as equal to sqrt(Vv^2+ Vh^2) The other way to do this is

94. ## Phoenix

Projectile motions problems are some of the most important problems you will encounter in this course. Through this discussion, we will solve a projectile motion problem step by step Assume a projectile is launched from ground height over a flat plane, at

95. ## physics

A projectile is launched at a speed of 141m/s and an angle of 45 degrees. How fast is it moving at the top of its curved trajectory?

96. ## Physics

In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that shown in Figure 3.10 and has a range of 24 m. Suppose the launch speed is doubled, and the projectile is fired at the same

Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminar-flow drag (fD = -bv), with b constant). Neglect (phase I); assume the projectile is launched from mthe origin at speed v1 and angle theta1 above the