What is Height: Definition and 1000 Discussions

Height is measure of vertical distance, either vertical extent (how "tall" something or someone is) or vertical position (how "high" a point is).
For example, "The height of that building is 50 m" or "The height of an airplane in-flight is about 10,000 m".
When the term is used to describe vertical position (of, e.g., an airplane) from sea level, height is more often called altitude.
Furthermore, if the point is attached to the Earth (e.g., a mountain peak), then altitude (height above sea level) is called elevation.In a two-dimensional Cartesian space, height is measured along the vertical axis (y) between a specific point and another that does not have the same y-value. If both points happen to have the same y-value, then their relative height is zero. In three-dimensional space, height is measured along the vertical z axis, describing a distance from (or "above") the x-y plane.

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  1. Frankenstein19

    Finding Tower 2 Height to Achieve 3x Velocity

    Homework Statement (I don't remember the EXACT problem because it was in an exam I took a few days ago but it was something like: If we drop the same object off of two towers, what does the height of Tower2 need to be if we want the object to fall is a velocity 3 times greater than the object...
  2. Said Ahmad

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  3. S

    I Effects of lug height on final gear ratio for a snowmobile....

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  4. A

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  5. tink7718

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  6. Monoxdifly

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  7. H

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  8. F

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  9. P

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  10. N

    MHB Computing height given shadow length and angle of elevation

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  11. G

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  12. chwala

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  13. G

    Help Me Hill Height for 35kg Child on 5kg Sled

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  14. F

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  15. K

    Acceleration of object at specific height?

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  16. vinamas

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  17. K

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  18. K

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  19. Jonathan Densil

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  20. x2017

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  21. B

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  22. T

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  23. F

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  24. A

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  25. T

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  26. RoboNerd

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  27. J

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  28. B

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  29. L

    MHB Formulas for Triangle Perimeter & Height

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  30. jbm1939

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  31. Matthew117

    Finding the rock's theoretical maximum height.

    Hello everyone. So I have this one question which I thought was going to be pretty easy, but now I struggle with it. It says: 1. The question A rock is thrown vertically up in the air with an initial velocity of 0.75ms-1. What would the rock's maximum theoretical height be? I am currently in...
  32. J

    Maximum height of CM of a rotating stick

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  33. oMattz

    Modelling the height of a block up a slope with time

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  34. P

    Find the height and the velocity of the object

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  35. C

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  36. O

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  37. C

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  38. I

    Why does height affect the amount of damage an object does?

    If I were to drop a penny from empire state building it would do more damage than if i dropped it from standing distance. Why? F=MA. neither the penny's acceleration nor mass change when its falling so the forces on both pennies should be the same. The only solution i could come up with is that...
  39. L

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    Homework Statement A skater jumps off a quarterpipe ramp and reaches 5m over the ramp. We can assume that he jumps in a vertical line. Find the speed the skater had before jumping off the ramp. Homework Equations https://www.physicsforums.com/threads/introductory-physics-formulary.110015/ All...
  40. T

    Height of Pendulum Homework: A&B Answered, C&D Yet to Solve

    Homework Statement In the two-sphere arrangement of Figure, assume that sphere 1 has a mass of 51 g and an initial height of 10 cm, and that sphere 2 has a mass of 82 g. After sphere 1 is released and collides elastically with sphere 2, what height is reached by (a) sphere 1 and (b) sphere 2...
  41. R

    Height limitation for natural circulation thermosiphon

    Suppose I have an overhead tank that heats hot water by natural circulation via a thermosiphon (& a Heat Exchanger with some source of waste heat), is there a limitation on how tall this loop can be? e.g. Can there be an elevated tank at 30 feet with a heat exchanger at ground level that heats...
  42. astrocytosis

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    Homework Statement This is the second part of a two part question. The first part asked for the maximum force that can be applied to a bone with minimum cross-sectional area is 3.0cm2, Young's modulus 1.4 × 1010 N/m2, and can withstand a 1.0% change in length before fracturing. I calculated it...
  43. J

    Trajectory - different start and end height, limited knowns

    Homework Statement A projectile is fired from a cannon at X-distance of 25m (X=25), height 10m (y=10), and fixed angle (53-degrees). After 3 seconds, the projectile hits its mark at different height 50m (y=50), and at a range of 175m (X=200). Gravity is normal and there is no wind resistance...
  44. R

    Find height, range and time of flight for projectile motion

    Homework Statement Homework Equations kinematics. a=F/m The Attempt at a Solution 100cos(70)=342 100sin(70)=393.7 X=1/2(-9.8)t^2+100t; t=0. t=20.4
  45. D

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    Homework Statement how long does it take a football, with an initial velocity of 30 m/s at 30 degrees up from the horizontal, to reach the top of its flight? Homework Equations Δy= ½ (Vf + Vo) t The Attempt at a Solution I know that Vf= 0 m/s here because when it reaches the highest point, it...
  46. Ryan_m_b

    Maximum height of ball with changing acceleration

    I put basic on this because my maths skills are exactly that and I suspect the answer to this question will be fairly maths heavy. I understand that the equation to calculate the maximum height of a projectile (ignoring wind resistance) is Hmax = (Vf2 - Vi2)/2a But this only works over small...
  47. Arlan

    Calculating Rebound Height for a Ball Colliding with Steel Plate

    Question: The coefficient of restitution for ball colliding with steel is 0.95. If ball is dropped from height h sub o above steel plate, to what height will the ball rebound? Please help me with this one, Is there a formula for this? all I know is e equals velocity of the first object...
  48. hawkeye1029

    What is the Launch Angle of a Projectile at Half Its Maximum Height?

    Homework Statement At 0.5 of its maximum height, the speed of a projectile is 0.75 of its initial speed. What was its launch angle? Homework Equations Not sure here, but: v^2 - vo^2 = 2as [maximum height] Ay = Asin(theta) [y-component] The Attempt at a Solution I didn't get very far...
  49. moenste

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  50. J

    Calc Air Pressure in Tank with Fluid Level & Height

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