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3 Comments Already

The kool 1 Said,
February 2nd, 2011 @2:09 pm  

Do your own homework

dsf Said,
February 2nd, 2011 @2:53 pm  

The missile returns to earth when s, the distance above the ground is 0.
0 = 100 + 500t – 4.9t²

Use the quadratic formula to solve for t.

Tim Said,
February 2nd, 2011 @3:25 pm  

after 240 years

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