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March 25, 2017

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Galileo threw a large rock upward from a tower balcony at an angle of 25.0o above the horizontal with an initial speed of 15 m/s. If the rock hits the ground 3.0 s later, how high above ground was the rock when it left Galileo’s hand?

  • Physics - ,

    figure the vertical component of initial veloctiy: 15sin25

    then

    hf=hi+Viv*t-4.9t^2 hf=0, solve for Hi.

    I am wondering how Galileo measured time? Stopwatch? How did he measure intial veloctiy?

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