A boy standing 408m from a wall blew a trumpet and heard the echo 2.4s later. Calculate the speed of the sound
The distance to the wall is 408m, so the total distance (D) traveled by the sound is: D = 2 × 408m = 816m
But v = \(\frac{d}{t}\) = \(\frac{816}{2.4}\) = 340m/s
There is an explanation video available below.
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