v^2-9.8^2=29.819.6

解

v^{2} - 9. 8^{2} = 2 \cdot 9.8 \cdot 19.6

v = \frac{49}{5}, v = - \frac{49}{5}

十進法表記

v = 21.91346 \dots, v = - 21.91346 \dots

解答ステップ

v^{2} - 9. 8^{2} = 2 \cdot 9.8 \cdot 19.6

9. 8^{2}

を右側に移動します

v^{2} = 480.2

x^{2} = f (a)

の場合, 解は

x = f (a), - f (a)

v = 480.2, v = - 480.2

480.2 = \frac{49}{5}

- 480.2 = - \frac{49}{5}

v = \frac{49}{5}, v = - \frac{49}{5}