A Fissure in the Earth Appeared After an Earthquake

question 6

Multiple Choice

A fissure in the earth appeared after an earthquake. To measure its vertical depth, a stone was dropped into it, and the sound of the stone's impact was heard 3.3 seconds later. The distance (in feet) the stone fell is given by , and the distance (in feet) the sound traveled is given by . In these equations, the distances traveled by the sound and the stone are the same, but their times are not. Using the fact that the total time is 3.3 seconds, find the depth of the fissure. Round your answer to two decimal places. ​

• A)94.19 feet
• B)91.00 feet
• C)121.98 feet
• D)126.38 feet
• E)126.48 feet

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Perception

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