How would u do this Physics Problem?

Discussion in 'Off Topic' started by Aimster, Oct 20, 2003.

  1. Aimster

    Aimster Lifer

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    You accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64m high. How far from the base of the cliff should you look for the keys?

    How do u do it?
     
  2. notfred

    notfred Lifer

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    Find how long it takes something to fall 64m.

    Multiply that number (in seconds) by 8.
     
  3. Aimster

    Aimster Lifer

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    law of gravitation?
     
  4. Heisenberg

    Heisenberg Lifer

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    Correct.
     
  5. Triumph

    Triumph Lifer

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    you use kinematic equations of motion.

    have you written out all of your knowns and unknowns? have you written out your equations? there's only 5 of them that you have to work with. learn how to use two equations and two unknowns.

    i know someone else is going to go and solve it for you, but i really wish they wouldn't. that's not the way to learn how to solve problems yourself.
     
  6. ElFenix

    ElFenix Elite Member<br> Super Moderator<br>Off Topic
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    64 is the 2nd derivative of the acceleration iirc
     
  7. Heisenberg

    Heisenberg Lifer

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    :confused: What?
     
  8. Aimster

    Aimster Lifer

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    Okay thanks guys I got it!
     
  9. Triumph

    Triumph Lifer

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    Yes, because we gave you the answer. Could you do it on a test? Could you do it if the keys were thrown at a 32 degree angle? Could you do it if you were throwing the keys up to a cliff 64 m high?

    I'm not trying to attack you, I just don't like how people on here are so ready to just give up the answer, instead of trying to help you learn to do it yourself.
     
  10. toekramp

    toekramp Diamond Member

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    i like green eggs and ham.
     
  11. Cyberian

    Cyberian Diamond Member

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    Yeah, Aimster!

    Someday in real life you are going to accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64m high and you won't have the faintest idea where to look for them and you'll probably starve in the desert.
     
  12. thedarkwolf

    thedarkwolf Diamond Member

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    I get new locks for my house and have the dealership make me new keys
     
  13. ElFenix

    ElFenix Elite Member<br> Super Moderator<br>Off Topic
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    no, that was integral

    its been a while