| (1) $5$ | (2) $7.5$ | (3) $10$ | (4) $12.5$ |
\textbf{166.} A ball is released from height $h$ and falls with constant acceleration $g = 10\ \dfrac{\text{m}}{\text{s}^2}$. If the average velocity in the last $\dfrac{3}{4}$ of the path is $15\ \dfrac{\text{m}}{\text{s}}$, what is the average velocity over the entire path in meters per second?
$$15\ \frac{\text{m}}{\text{s}}$$
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(1) $5$ & (2) $7.5$ & (3) $10$ & (4) $12.5$
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