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PHYSICS

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A troll on a 75m tall cliff throws a 35 m/s boulder at 35 degrees above the horizontal at a herd of sheep. What is the time of flight, the range and the maximum height for the boulder?

HOW DO I DO THIS??

  • PHYSICS -

    You know the initial vertical velocity (35sin35).
    Vf at top max height is zero. Use
    vf=vivertical-gt to to find the time to the top, then use
    h=ho+vivert*t-1/2 g t^2 to find the max height.
    For time of flight, hf=0
    0=ho+vivert*t-gt solve for t
    now, having the time of flight, the horizontal distance will be
    distance=vihoriz*t

  • PHYSICS -

    is the correct answer for max height 20.58, and the correct answer for the range 58.77?

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