Question

Aman stands at a distance of 255m from a cliff. He fites a gun and heard echo after 1.5 seconds. What will be the velocity of the sound

Answer 1

distance=255m

time=1.5s

speed= 2×distance/time

=2×255×10/15

=85×4

=340m/s

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Answer 2

$distance = 255m$

$time = 1.5 \: sec$

$v = 2d \div t$

$2 \times 255 \div 1.5$

$= 340m \div s$