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A hunter fires a gun at a point 408 m away from a cliff. ...

A hunter fires a gun at a point 408 m away from a cliff. If he hears an echo 2.4 s later, determine the speed of the sound wave

A.

340 ms1

B.

380 m s1

C.

400 m s 1

D.

680 m s1

Correct answer is A

speed of the sound wave = distance2time

40822.4

: speed of the sound wave = 340 ms1