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Math Help - help with physics

  1. #1
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    help with physics

    While you are standing on the ground, you observe your friends pass by in a van traveling at a constant velocity. They drop a ball and you all accurately describe the velocity of the ball. Which description is correct?

    a. yours
    b. your friends'
    c. both
    d. neither
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  2. #2
    fkf
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    Re: help with physics

    We have two frames. One is your friends and one is yours. In the world of physics. Why should one of them be more correct than another? We're talking about relative motions. That's why a) and b) are wrong. You can't say that anyone is more correct/wrong than another in these reference frames.

    Then we have c) and d) left. Then it's rather obvious that c) is the correct answer. Assuming that you both describe the ball correct from your reference frame. And in the text it says so. c) is the correct answer. This is really a question of relativity.
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    Re: help with physics

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    Re: help with physics

    Quote Originally Posted by fkf View Post
    This is really a question of relativity.
    Specifically Galilean Relativity, not Special or General.

    Just my two cents.

    -Dan
    Thanks from MarkFL
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    Re: help with physics

    Quote Originally Posted by topsquark View Post
    ... Just my two cents.
    well spent
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  6. #6
    fkf
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    Re: help with physics

    Quote Originally Posted by topsquark View Post
    Specifically Galilean Relativity, not Special or General.


    Just my two cents.


    -Dan
    You got that!
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