Homework Help: Engineering science

Posted by Leonel on Sunday, May 27, 2012 at 4:17pm.

A stone is thrown down a well at a velocity of 20m/s. If the well is 20m deep, calculate the time taken for the stone to reach the bottom of the well.

Engineering science - bobpursley, Sunday, May 27, 2012 at 4:59pm
depth= vi*t-4.9t^2 where vi=-20, d=-20
solve for t.

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