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Math Help - marble rollin

  1. #1
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    marble rollin

    A marble rolling along a table at 18cm a second rolls off the edge if a table 80.0 cm high calc the distance the marble lands from the table(distance along the floor).

    I only wish i knew how
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  2. #2
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    Quote Originally Posted by pepperroni View Post
    A marble rolling along a table at 18cm a second rolls off the edge if a table 80.0 cm high calc the distance the marble lands from the table(distance along the floor).
    using cm for distance and sec for time ...

    \Delta x = v_x \cdot t = 18t


    \Delta y = -\frac{gt^2}{2}

    -80 = -490t^2

    solve for t , then determine \Delta x
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