Question

a car is running with a velocity of 30 metre per second reaches Midway between two vertical parallel was separated by 360 m , when driver sounds the horn for a moment speed of sound in air is 330 m per second after blowing horn , the 3 echo will be heard by the driver respectively at​

Answer 1

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Answer 2

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A car is running with a velocity of 30 metre per second reaches Midway between two vertical parallel was separated by 360 m , when driver sounds the horn for a moment speed of sound in air is 330 m per second after blowing horn , the 3 echo will be heard by the driver respectively at

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1.0s, 2.4s, 3.0s

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$\leadsto \: X=30$

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$\star \: For \: the \: first \: echo$

$\leadsto\frac{180+180-x1}{330}=t1$

$\leadsto 360-30t1 = 330t1$

$\leadsto \: t1= \frac{360}{360}$

$\leadsto t1=1s$

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$\star \: For \: the \: second \: echo$

$\leadsto\frac{720+x2}{330}=t2$

$\leadsto720+30t2=330t2$

$\leadsto t2 \: \frac{720}{300}</p><p>$

$\leadsto t2=2.4s$

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$\star \: For \: the \: third \: second </p><p>$

$\leadsto\frac{1080-x3}{330}=t3$

$\leadsto1080-30t=330t3$

$\leadsto \: t3=3s$

[Hope this helps you.../]