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ellipse or parabola?

Discussion in 'Pre-Medical - MD' started by kreno, Aug 18, 2001.

  1. kreno

    kreno Candy Man 7+ Year Member

    Jul 7, 2001
    was the answer to that momentum collison an ellipse or parabola shape that is formed?
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  3. kreno

    kreno Candy Man 7+ Year Member

    Jul 7, 2001
    'cuz everyone i talked to swear it's parabola, but i'm skeptical.... i think it's an ellipse.

  4. jordews

    jordews Senior Member 7+ Year Member

    Jun 26, 2001
    Nashville, TN
    I went with parabola, only because an ellipse comes back around like a circle, and a parabola would keep going straight down. It was my best guess anyways.
  5. nashtrash

    nashtrash Member 7+ Year Member

    Jun 26, 2001
    Nashville, TN
    I put parabola too...

    do you know what it means for a species to be "k-selected"??
  6. Jameson

    Jameson Member 7+ Year Member

    Jun 26, 2001
    If a species is K-selected than its population is determined by the number of individuals the environment can support, i.e. if a particular environment can only support 50,000 individuals than that is the limit. In theory, the environment cannot support anymore individuals than that number.K-selected species are typically of higher order, like humans, show parental care, live a long life and have fewer offspring.
    The opposite of a K-selected species would be an r-selected species which tend to be of a low order, have many offspring at one time, short lives, no parental care. If I recall, r-selected populations are limited, for the most part, by predators.
    congrats on finishing the MCAT's ;)
  7. Denilson

    Denilson Senior Member 7+ Year Member

    Jul 6, 2001
    Test is over, why do you guys dwell on that? you can't change any answers...go party! ;)
  8. sweetz1180

    sweetz1180 Senior Member 7+ Year Member

    Apr 3, 2001
    Queens, NY
    i put down parabola...that k- r-species question was annoying, i actually almost said what the f*** out loud...i never learned that in bio
  9. dknykid1980

    dknykid1980 Senior Member 7+ Year Member

    Jul 13, 2001
    west coast baby
    YAH WHT THE HELL WAS THAT K and R ****!!
  10. Yeah it's usually covered in ecology.
  11. NE_Cornhusker1

    NE_Cornhusker1 12" Member 7+ Year Member

    Aug 6, 2001
    The Cornhusker State
    The equation is y=Vi:thumbup:t - 1/2 at^2.
    y is the distance down.
    Vi:thumbup: is initial velocity heading down(zero)
    t is time
    a is acceleration
    The minus sign is in there because your going down. The grid (y and t) is set up as follows; y was going up and down (the vertical face of the cliff) and t is the time.

    It's just a basic high school algebra question. Peace Out. AEKDB.
  12. scubadiva

    scubadiva postwhore 7+ Year Member

    May 22, 2001
    Thank God, I got one right.... 76 more to go (hopefully :D ) yeah, right.

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