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Given: t= 5.0 s
Vi = 0 m/s
Vf= 340m/s
g= 9.8 m/s^2

This is a free fall problem so the equation that will be use is
y=Vi t +1/2 gt^2
y= (0 m/s)(5.0 s) + 1/2 (9.8m/s^2)(5.0 s)^2
y= 0 m + 122.5 m

so the height of the building will be 122.5 m
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