At Zion National Park a loud shout produces an echo 4.2 s later from a colorful sandstone cliff. How far away is the cliff?|||d = vt
d = (speed of sound)(4.2)
d = (340)(4.2)
d = 1428 m|||Time for round trip = 344 * 4.2 = 1445 m
Distance to cliff = 1445 / 2 = 723 m|||1428
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