A dog barks in a park and hears its echo after 0.5 second. If the sound of its bark got reflected by a nearby building, find the distance between the dog and the building. Take the speed of sound in air is 346 m/s.

A dog barks in a park and hears its echo after 0.5 second. If the soun

1.	A dog barks in a park and hears its echo after 0.5 second. If the sound of its bark got reflected by a nearby building, find the distance between the dog and the building. Take the speed of sound in air is 346 m/s.
A.	86.5 m
B.	86 m
C.	85 m
D.	75 m
Answer» B. 86 m

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A dog barks in a park and hears its echo after 0.5 second. If the sound of its bark got reflected by a nearby building, find the distance between the dog and the building. Take the speed of sound in air is 346 m/s.

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