A boy standing a distance from the foot of a tall cliff claps his hands and hears an echo 0.5s later. If the speed of sound is 340ms1, how far is he from the cliff?
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Correct Answer: Option C
Explanation:
X = vt/2 = (340 x 0.5)/2 = 85m
X = vt/2 = (340 x 0.5)/2 = 85m