Mathematics, 31.05.2020 18:57 froyg1234

A rock was thrown from the top of a cliff that its distance above sea level was given by s(t)=at^2 + bt +c , where t is time in seconds after the rock was released. After 1 second the rock was 63 metres above sea level, after 2 seconds 72 m and after 7 seconds 27m. Find an expression for s(t).

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