SOLUTION: The distance that an object falls from rest, when air resistance is negligible, varies directly as the square of the time that it falls (before it hits the ground). A stone droppe

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Question 1149714: The distance that an object falls from rest, when air resistance is negligible, varies directly as the square of the time that it falls (before it hits the ground). A stone dropped from rest travels 160 feet in the first 4 seconds. How far will it have fallen at the end of 7 seconds? (Round off your answer to the nearest integer.)
Answer by ikleyn(52772) About Me  (Show Source):
You can put this solution on YOUR website!
.

Use the proportion


    160%2Fx = 4%5E2%2F7%5E2.


From the proportion, find  x = %28160%2A7%5E2%29%2F4%5E2 = 490 feet.    ANSWER
Solved.

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Comment from student:  Thanks a lot Ikleyn.  What is the link of your website?  I can share.
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