# An astronaut standing on a platform on the Moon drops a hammer. If the hammer falls $6.0$ meters vertically in $2.7 \;seconds$, what is its acceleration ?
$\begin{array}{1 1} 1.6 \;m/s^2 \\ 4.4 \;m/s^2 \\ 2.2\;m/s^2 \\9.8\;m/s^2 \end{array}$