Question

a boy blow the whistle while standing near a place he has its echo after 0.4 second what is the distance between the boy and the Cliff if speed of sound is 334 M second

Answer 1

v=334m/s
t=0.4s
d=?
d=v×t/2
=334×0.4/2
=167×0.4
=66.8m

distance from cliff=66.8m

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