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    Galileo dropped objects from the Tower of Pisa to study gravity

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    1. Galileo dropped objects from the Tower of Pisa to study gravity. The objects height above the ground could be measured using h=-4.9t^2 +56.

    a) How high is the Tower?
    56 units

    b) How far has an object fallen after 2 seconds?

    h = -4.9^2 + 56
    h = -4.9(2)^2 +56
    h = -19.6 +56
    h= 36.4 units

    c) How long will it take for an object to hit the ground?

    h = -4.9^2 + 56
    0 = -4.9t^2 + 56
    4.9t^2 = 56 - 0

    I do not know where to go from here.

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    https://brainmass.com/physics/gravity/galileo-dropped-objects-tower-pisa-study-gravity-44692

    Solution Preview

    a) correct.
    b) h=36.4 units therefore the object has fallen:

    56 - 36.4 = 19.6 ...

    Solution Summary

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