A. 8.75m
B. 16.50m
C. 87.75m
D. 123.75m
E. 330.00m
Correct Answer:
Option D – 123.75m
Explanation
Distance x = vt/2 =
1650 x 0.15/2
= 123.75m
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![an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms-1]")