<PRE><B>Question 32272</B>
we have...
speed = 14 ft/second 
distance or h = -14t^2 + 56 

also we know that ...Distance = speed * time 

putting the above values in the formula..we get

 -14t^2 + 56 = 14 * t 

taking common 14 from LHS ,,we get

14 ( -t^2 + 4) = 14 * t 

divide both sides by 14 and we get ...

-t^2 + 4 = t 

or 0 = t^2 + t - 4 

solve the value of t by discriminent  and you get the value of t 

and put the value of t in formula ..distance = speed * time

and you get distance also.,.

Still if you unable to solve further contact me again. 

Hope this will help you 

Please feel free to revert back for any further queries.
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