Tolong dibantu nomer 47. Makasi sebelumnya

[tex]\displaystyle h=10\,\text{m}\\g=10\,\text{m/s}^2\\\\v=?\\\\E_p=E_k\\mgh=\frac12mv^2\\gh=\frac12v^2\\10\cdot10=\frac12v^2\\200=v^2\\\boxed{\boxed{10\sqrt2\,\text{m/s}=v}}[/tex]