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How high is the cliff if a rock is dropped and you hear the sound after 7 seconds?
Wiki User
∙ 12y ago
S=ut+0.5*a*t2
s=displacement
u=intial velocity=0m/s
t=time=7seconds
a=9.81m/s2
s=0*7+0.5*9.81*72
s=240.345m
Wiki User
∙ 12y ago
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