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A helicopter is ascending vertically with a speed of 5.00 m/s. At a height of 120 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?

v_0 for the package equals the speed of the helicopter


  • Physics -

    Package height Y at drop time t is
    Y = 120 + 5 t - 4.9 t^2

    Set Y = 0 and solve.

  • Physics -

    A helicopter is ascending vertically at the rate of 19.6 m/s. When it is at the height of 156.8 m above the ground a stone is dropped. how long does the stone take to reach the ground?

  • Physics -


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