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March 29, 2017

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A fire hose held near the ground shoots water at a speed of 5.5 .At what angle(s) should the nozzle point in order that the water land 2.0 away (see the figure )?

  • physics - ,

    Dx = Vo^2*sin(2A)/g = 2
    (5.5)^2*sin(2A)/9.8 = 2,
    30.25*sin(2A)/9.8 = 2,
    Multiply both sides by 9.8:
    30.25*sin(2A) = 19.6,
    sin(2A) = 19.6 / 30.25 = 0.64793,
    2A = 40.4 Deg.
    A = 20.2 Deg.

  • physics - ,

    Mastering physics will take this answer: --> 26,64 <-- degrees.

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