a rocket is propelled into the air. its path can be modelled by the relation h = -5t^2 + 50t + 55, w

Discussion in 'Calculator Requests' started by math_celebrity, May 1, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    a rocket is propelled into the air. its path can be modeled by the relation h = -5t^2 + 50t + 55, where t is the time in seconds, and h is height in metres. when does the rocket hit the ground

    We set h = 0:
    -5t^2 + 50t + 55 = 0

    Typing this quadratic equation into our search engine to solve for t, we get:
    t = {-1, 11}

    Time can't be negative, so we have:
    t = 11
     

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