Originally Posted by

**mr fantastic** Well, on the one hand you have your model for the data, namely $\displaystyle d = k t^n$. From the graph of log d versus log t you have calculated the values of k and n .....

On the other hand, there's a formula that says that for constant acceleration, $\displaystyle d = v_1 t + 0.5 a t^2$. In this formula $\displaystyle v_1$ is the initial velcocity ( = 0 in your experiment, I assume?) and a is acceleration. In your experiment, a = g .....

Compare $\displaystyle d = k t^n$ with $\displaystyle d = 0.5 g t^2$: k = 0.5 g therefore g = .....