A. 10m
B. 350m
C. 175m
D. 125m
Correct Answer:
Option D = 175m
Explanation
Difference in time = 1 sec
echo time = 1 ÷ 2 = 0.5 sec
Difference of cliff from ship = 0.5 x 250
= 125m
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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]")
