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Physics

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A stone is thrown at an angle of 30 degrees above the horizontal from the top of a cliff with an initial speed of 12 m/s. If it hits the ground 4.6 seconds later, what is the height of the cliff?

  • Physics -

    h=hi=Vi*t-4.9t^2 where vi=12sin30, hf=0

    hi=4.9t^2-6t and t=4.6 solve for hi

  • Physics -

    59.8 metres

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