Use the position function s(t) = –4.9t2 + 900, which gives th

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Use the position function s(t) = –4.9t2 + 900, which gives the height (in meters) of an object that has fallen for t seconds from a height of 900 meters. The velocity at time t = a seconds is given by the following.

$ \displaystyle{\lim_{t \rightarrow a}} \text{ }\dfrac{s(a) - s(t)}{a - t} $
At what velocity will the object impact the ground? (Round your answer to two decimal places.)
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