![E_{pot}=6*9.81*300\\E_{pot} = 17658 [J]](/tpl/images/0955/6724/3cecf.png)
![17658 = \frac{1}{2} *6*v^{2} \\v=\sqrt{5886}\\v=76.72 [m/s]](/tpl/images/0955/6724/1583a.png)
Can you please answer the a and the b?
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