Posted by David on .
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 
bobpursley,
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)