Thursday, September 17, 2009

The Marksman

A marksman fires a rifle pointed horizontally (0 degrees vertical). The velocity of the bullet is 1000 ft/sec. Ignore air friction. The distance between the rifle and the ground is 3 feet. How far does the bullet travel before hitting the ground. (Hint: the marksman is on earth and not the moon).
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15 comments:

  1. KathleenSeptember 17, 2009 at 3:35 PM

    there was a lot of trouble with this one.
    I went ahead with the nifty internet.
    Now there is no real clue that I plugged in the right numbers in the right spots of the equation. At first, I was going to just throw in the towel and say that I had never taken physics...
    My answer is 31.62 feet.
    To me, it makes no real sense especially because of my uncertainly about equation plugging.
    If I am wrong, do not give the answer I will try plugging again haha

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  2. KathleenSeptember 17, 2009 at 3:36 PM

    BTW, I did not even seriously consider Jennifer's cake question...

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  3. TerrySeptember 17, 2009 at 5:17 PM

    Kathleen, maybe show me the equation you are using so I know why you got the wrong answer.

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  4. KathleenSeptember 18, 2009 at 4:31 AM

    maybe I better just redo the calculations but that is for another time

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  5. KathleenSeptember 18, 2009 at 11:50 AM

    here is my final answer
    431.84 feet
    now am I close?

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  6. TerrySeptember 18, 2009 at 12:55 PM

    Very good Kathleen. I will be busy working on my next puzzle. Maybe something about two marksman trying to hit each others bullet.

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  7. KathleenSeptember 18, 2009 at 2:02 PM

    sounds dangerous

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  8. AnonymousSeptember 18, 2009 at 4:32 PM

    You are on a trip to a tropical island. You find out the island is inhabited by 3 tribes. As it turns out, you arrive right when the chiefs of these tribes are all meeting. One chief is wearing a blue headress, one is wearing a green one, and the 3rd is wearing a white one. One chief always tells the truth, one always tells lies, and one can either tell the truth or lie but you don't know which is which. The chiefs are very busy and only have time to answer one "yes or no" question each. Each question must be directed at ONE of the chiefs. The chiefs understand English but don't speak it, so they answer in their own language. You know that the words "da" and "ja" mean "yes" and "no", but you don't know which word means which. Taking all that into consideration, what questions will you ask the chiefs to determine who is the truth-teller, who tells lies, and who does both??

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  9. AnonymousSeptember 18, 2009 at 4:34 PM

    GOOD LUCK DAD!!! And Aunt K!!!

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  10. TerrySeptember 20, 2009 at 4:37 PM

    One-Pot Wonder,
    Are you sure I cannot ask one of the chiefs more than one question. Not sure I can solve this without asking a single chief more than one question!

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  11. AnonymousSeptember 22, 2009 at 1:44 PM

    This comment has been removed by the author.

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  12. TerryOctober 6, 2009 at 6:47 PM

    OK One-Pot Wonder, what is the first question and how will it determine what ja and da mean?

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  13. AnonymousOctober 27, 2009 at 10:45 AM

    This comment has been removed by the author.

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  14. AnonymousOctober 27, 2009 at 10:49 AM

    This comment has been removed by the author.

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  15. TerryOctober 28, 2009 at 11:14 AM

    If I ask the question:

    "Does da mean yes if and only if you are Truth if and only if the chief in blue is Random?"

    to the chief who lies he may say yes or no. I don't quite understand how this question will help me. Can you explain in more detail!

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