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QA stone is dropped from the edge of a roof, and hits the ground with a velocity of -195 feet per second

A stone is dropped from the edge of a roof, and hits the ground with a velocity of -195 feet per second. How high is the roof? .

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#1Caralynn93Answered at 2013-01-24 03:52:50
v = at
that gets you t

d = 1/2 at^2

that gets you the height

or, d = v^2 / 2a
You have v=-195, a=-32
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A stone is dropped from the edge of a roof, and hits the ground with a velocity of -195 feet per second

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