Question

The speed of sound in a medium is 340 m/s. If a man hears the echo from a building after 4 seconds, how far is the building from the man? choose the best option
A)1360m
B)2720
C)340m
D)680m​

Answer 1

d) 680m

hope it helps you friend

Answer 2

D)

$d)680m$

thanks