In the Atwood's machine shown above, the two masses are initially

at rest at the same height. After they are released, $m_2$ falls $0\mathrm{.}87m$

and hits the floor while $m_1$ rises $0\mathrm{.}87m.$ At what speed $(\frac{m}{s})$ is $m_2$

traveling when it hits the floor? $m1=1\mathrm{.}7kg$ and $m_2=3\mathrm{.}9kg$