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The distance traveled by an object moving in a straight line is given by s equals t2 - 8t where s is in feet and t is the time in seconds How long will it take the object to move 9 feet?
Wiki User
∙ 13y ago
If the required time is measured from 0 then s = t2 - 8t, therefore 9 = t2 - 8t, which can be written as t2 - 8t - 9 = 0
This equation can be factored as (t - 9)(t + 1) = 0
As we are only concerned with a positive time then the answer is when t - 9 = 0, thus t = 9 seconds.
Wiki User
∙ 13y ago
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