Galileo had made his most important contributions to mechanics.He introduced the three laws of falling bodies which utterly refutes the Aristotlean view of motion and provides the very basis of Newton`s laws of motion.He proved that the distance ${\displaystyle d\,}$ traveled by any object falling from zero ${\displaystyle (0)\,}$ initial velocity is
${\displaystyle d={\frac {gt^{2}}{2}}}$