sebuah nola dijatuhkan dri ketinkgian X sperti pda gambr. jika ketinggian bola pda saat pantul n prtama 50 cm & pantulan kedua 20 cm, mka besar X adlah...

[tex] \sqrt{ \frac{h2}{h1} }= \sqrt{ \frac{h3}{h2}}\\ \\ \sqrt{ \frac{50}{h1} }= \sqrt{ \frac{20}{50} } \\ \\ \sqrt{ \frac{50}{h1} }}= \sqrt{0.4} \\(\sqrt{ \frac{50}{h1} }})^2= (\sqrt{0.4})^2 \\ \\ \frac{50}{h1} }=0.4 \\ \\ h1= \frac{50}{0.4} \\ \\ h1=125~cm[/tex]