1 year ago

21. A person standing 49.5m from the foot of a cliff claps his hands and hears an echo 0.3

Physics

1 answer:

777dan777 [17]1 year ago

5 0

Answer:

330 m/s

Explanation:

The sound wave has to travel TO the cliff AND back = 2 * 49.5 = 99 m

magnitude of velocity = distance / time = 99m / .3 s = 330 m/s

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