A. 340 ms−1
B. 380 m s−1
C. 400 m s −1
D. 680 m s−1
Correct Answer:
Option A – 340 ms−1
Explanation
speed of the sound wave = distance ∗ 2/time
= 408∗2/2.4
: speed of the sound wave = 340 ms−1
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![A girl standing some distance from the cliff claps her hands and hears the echo 0.8s later. calculate her distance from the cliff. [speed of sound in air = 320 ms‾¹]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A girl standing some distance from the cliff claps her hands and hears the echo 0.8s later. calculate her distance from the cliff. [speed of sound in air = 320 ms‾¹]")
