Answered

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

Sagot :

Given: t= 5.0 s
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