PhysicsSound wavesWAEC
A boy hears the echo of his shout from a cliff 1 s after shouting. If sound travels at 340 m/s, how far away is the cliff?
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Answer: D. 170 m
The sound travels to the cliff and back: distance = 340 × 1 ÷ 2 = 170 m.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.