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B Is it possible to double jump in real life?

  1. Jun 16, 2017 #1
    I think it is not possible, my friend seems to think if you press hard enough on the atmosphere it will become dense enough to jump on.
     
  2. jcsd
  3. Jun 16, 2017 #2

    phinds

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    Gold Member

    With a person's feet? That's absurd.
     
  4. Jun 16, 2017 #3
    exactly what I was saying. So I am right?
     
  5. Jun 16, 2017 #4

    phinds

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    Gold Member

    What did I just say? Do I really need to say it again?
     
  6. Jun 16, 2017 #5
    I am trying to prove him wrong, okay.
     
  7. Jun 16, 2017 #6

    Nidum

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    Science Advisor
    Gold Member

    Do a rough sum and show it to him . You have air density and area of bottom of an average foot . How fast would the foot have to be travelling through the air to get any useful lift force ?
     
  8. Jun 16, 2017 #7

    berkeman

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    Staff: Mentor

    We do not debunk nonsense here at the PF. Thread is closed.
     
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