What Damage can happen to a 110 pound man jumping from 80ft

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Discussion Overview

The discussion revolves around the potential physical damage a 110-pound man might sustain when jumping from a height of 80 feet into water feet first. Participants explore the implications of impact velocity, body positioning, and anecdotal evidence related to similar jumps.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants calculate that the impact velocity upon hitting the water would be around 50 mph, raising concerns about bodily harm.
  • Others suggest that if the jump is executed correctly, with a feet-first entry, significant injury may be avoided.
  • One participant humorously notes that young men often feel invincible, implying a belief in their ability to withstand such impacts.
  • A contrasting viewpoint mentions a recent incident where a young man died after jumping from a height of 76 feet, suggesting the risks involved.
  • Another participant discusses the physics of water entry, arguing that at higher velocities, the water behaves more like a solid, leading to severe injuries, especially if the jumper does not enter feet-first.
  • Concerns are raised about the survivability of jumps from heights above 60 feet for the average person, contrasting with the experiences of trained cliff divers.

Areas of Agreement / Disagreement

Participants express a mix of viewpoints, with no consensus on the safety of jumping from 80 feet. While some believe proper technique can mitigate injury, others emphasize the inherent dangers and potential for fatal outcomes.

Contextual Notes

Participants reference anecdotal evidence and personal experiences, which may not provide a comprehensive understanding of the risks involved. The discussion lacks detailed analysis of the physiological effects of high-velocity water impacts.

Jimmy Smith
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What will happen to a 110 pound man jumping from 80 feet into water feet first? I have done the math he hits the water at around 50 mph. How will this damage his body?
 
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Jimmy Smith said:
What will happen to a 110 pound man jumping from 80 feet into water feet first? I have done the math he hits the water at around 50 mph. How will this damage his body?
People are jumping from cliffs that high for fun. If done the right way there doesn't have to be any relevant damage.
 
The risk here, of course, is that he may not manage to ensure he enters feet-first. But young men have a force field around them that protects them from all injuries. I know I did! Loopy, the lot of them.
 
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A young man died near here last week. He jumped 76 feet and landed in the water. I think it broke his neck.
 
If he lands wrong, a waste pan and a broom will be the appropriate way to get him up, followed of course with a mop if it is in an normally clean area.
 
There will be an upper limit for the jump to be survivable and I would suggest 80+ feet will be getting there. At higher velocities of entry the water molecules have far less time to "get out of the way" so that displacing say 70kg of material (water or otherwise) in a very short space of time results in the jumper virtually hitting a semi-solid, and all the forces generated at that time act on him.

In Glasgow we have a bridge that stands about 160ft high at the middle which has seen a lot of suicides. Everyone who goes over will hit the water anywhere around 50-70 mph, which in turn equates to very high g-forces. Not really survivable short of a miracle.They won't enter the water like a cliff diver either, probably tumbling so you're looking at crush injuries to both limbs and internal organs.

Cliff divers from 80ft maybe, but joe normal will get hammered much after 60ft.
 
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