Question 852173: It takes 5 seconds for sound to travel 1 mile through air. It takes only 1 second for sound to travel 1 mile through water. How many minutes faster will a sound 90 miles away travel through water than air?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! It takes 5 seconds for sound to travel 1 mile through air. It takes only 1 second for sound to travel 1 mile through water. How many minutes faster will a sound 90 miles away travel through water than air?
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"minutes faster" makes no sense, minutes is not a unit of speed.
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To find how many minutes sooner it would arrive, calculate the 2 times.
d = r*t
t = d/r
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In water, r = 1 mi/sec
In air, r = 1/5 mi/sec
90 miles in air at 0.2 mi/sec --> 90/0.2 = 450 seconds
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