Physics JAMB

A boy receives the echo of his clap reflected by a nearby hill 0.8s later. If the speed of sound in air is 3.40m/s; how far is he from the hill?

A. 66m
B. 136m
C. 264m
D. 528m

Correct Answer:

Option B – 136m

Explanation

Distance = speed × time
= (3400) × (0.812)
= 136m

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5 years ago

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