Physics

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A hot air balloon is rising at a constant velocity of 13.3 m/s. When the balloon is at a height of 15 m, a heavy object is dropped overboard. IF air resistance on the object is neglected, how long does it take for it to reach the ground?

  • Physics -

    s = 15 + 13.3t - 4.9t²

    solve for s=0

  • Physics -

    i don't get how to get rid of all the t's...

  • Physics -

    0=15+13.3t-4.9t^2

    it is a quadratic equation, use the quadratic formula.

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