A man is standing at a distance of 48 m away from a wall. He fires a gun and hears
a distinct echo. Every time he fires the gun, he takes a step forward and repeats
the same. What is the maximum displacement of he man from his initial position
towards the wall for which he gets a distinct echo? [ Speed of Sound in air is
320 m/s ]
Answers
Answered by
1
Answer :
Velocity = Distance / time
Distance = 48m
Velocity = 320 m/ s
Explanation:
Time =48/320 =0.15*2 ( because it is an echo which is heard )
therefore the answer is 0.30second
Answered by
1
Answer:
vilosity=distance /time
vilocity=320m/s
48/320
=0.15×2
=0.30 second
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