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    Finding Initial Speed and Final Velocity of a Horizontal Projection

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    An object is thrown horizontally from the top of a building at a height of 32.5 m above the ground, it hits the ground 65m from the base of the building. What is the initial speed? What is the velocity just before it hits the ground?

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    Solution Preview

    Hi there,

    See the attached file for equations and solution. It is scanned at high resolution for good printing. If you can't see it on your screen too good, then zoom in or print it out.

    First I found the time it ...

    Solution Summary

    This solution uses the equations for the y-direction y=(1/2)at^2 + v(initial)t + y(initial) and the x-direction x = (1/2)at^2 + v(initial)t + x(initial). Calculation, answers and a diagram are included.