# A student drops a stone from the top of a building and hears the sound of the stone striking the ground 5.0s. How high is the building? Assume the speed of sound in the air to be 340m/s

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Vi = 0 m/s

Vf= 340m/s

g= 9.8 m/s^2

y=?

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

y=122.5m

so the height of the building will be 122.5 m