Math

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A child releases a balloon from a height of 6ft and it ascends at a rate of 5ft per second. A second balloon starts at a height of 51 ft and descends at a rate of 2 ft per second. After how many seconds will both balloons be at the same height above the ground.

  • Math -

    6/5 = 51/2
    =122.4 sec

  • Math -

    h1 = 6 + 5 t
    h2 = 51 - 2 t
    when is h1 = h2 ?

    6 + 5 t = 51 - 2 t
    7 t = 45

    t = 6 3/7 seconds

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