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Simple True/False Question

  1. Jan 24, 2005 #1
    The maximum height reached by a projectile depends on the horizontal velocity component.

    True or False


    Here's my reasoning - the maximum height is reached when y=0, so in that case the maximum height depends on the horizontal velocity component. I'd like to hear your guys thoughts on this. I only get 1 shot at getting this right so I wanna hear what you guys think! :wink:
     
  2. jcsd
  3. Jan 24, 2005 #2

    dextercioby

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    FALSE.Can u see why?

    Daniel.
     
  4. Jan 24, 2005 #3
    is it because of gravity?
     
  5. Jan 24, 2005 #4

    dextercioby

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    Since it's the only force acting on the projectile (neglecting Magnus effect,aerodynamic force,Stokes force,Coriolis force) i'd say yes...

    Daniel.
     
  6. Jan 24, 2005 #5

    cepheid

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    Yeah....the KEY point of projectile motion as modelled in school is that horizontal and vertical components of the projectile's velocity are independent. That's what they want you to remember.
     
  7. Jan 24, 2005 #6
    alright thx guys
     
  8. Jan 25, 2005 #7

    Tide

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    You left out the finite size of the planet which brings the inverse square law into play! :-)
     
  9. Jan 25, 2005 #8

    dextercioby

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    He asked me about gravity,not the inverse square law and where it comes from...And besides,everything reduces to solving Einstein's equations,right...?? :wink:

    Daniel.
     
  10. Jan 25, 2005 #9

    and to continue dexter's nitpicking, he also forgot to incorporate the fact that the earth is not a perfect sphere...Where are them Legendre-terms in the potential ???


    marlon
     
  11. Jan 25, 2005 #10

    dextercioby

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    "The maximum height reached by a projectile depends on the horizontal velocity component."

    Do you see any Earth nonspherical,here???

    Daniel.
     
  12. Jan 25, 2005 #11
    do you see any coriolis,blablabla here ???

    gravity also changes when you take into account a non-spherical earth

    marlon
     
  13. Jan 25, 2005 #12

    dextercioby

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    The PLANET/celestial body (with atmosphere) A PRIORI SPHERICAL IS ASSUMED ROTATING...

    I AGREE with the second part...

    Daniel.
     
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