March 28, 2017

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A shingle falls straight down from the roof of a building that is 144 feet tall.
a. Use a vertical motion model to write an equation that gives the height h of the shingle t seconds after it falls.
b. When does the shingle hit the ground?
c. If the same shingle were dropped from a building that was twice as high, would it take twice as long to drop? Explain.

  • Algebra - ,

    h=hi+vi*t+1/2 g t^2
    h=144+0*t+1/2 (-9.8)t^2

    b. when h=0, solve for t.
    c. think. T=sqrt(hi/4.9)

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