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April 15th, 2010, 02:51 PM   #1
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physics time question

If a body falls 127 ft in 2.18 s, how many seconds will it take to fall 517 ft? The initial velocity is 0.

Round the value of acceleration and your answer to 2 decimal places.

ive tried figuring this question out in so many ways but im not getting the right answer, any help is greatly appreciated
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April 16th, 2010, 12:57 PM   #2
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Re: physics time question

Quote:
Originally Posted by Darpa.Chief
If a body falls 127 ft in 2.18 s, how many seconds will it take to fall 517 ft? The initial velocity is 0.

Round the value of acceleration and your answer to 2 decimal places.

ive tried figuring this question out in so many ways but im not getting the right answer, any help is greatly appreciated
Assuming no air resistance and 0 initial velocity, the equation is d=(at^2)/2 where t is time, d=distance, and a is acceleration (ft/sec^2). You should be able to figure it out.
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