2-64 할리데이 11판 솔루션 일반물리학

$$ \begin{cases} t_1&=1977/01/26\\ t_2&=1983/09/18\\ S&=30600\ut{km} \end{cases} $$ $$ \begin{aligned} t_2-t_1&=2426\ut{day}\\ \end{aligned} $$ $$ \begin{aligned} \bar v&=\frac{S}{t}\\ &=\frac{30600\ut{km}}{2426\ut{day}}\\ &=\frac{30600\ut{km}}{2426\ut{day}}\cdot\frac{1000\ut{m}}{1\ut{km}}\cdot\frac{1\ut{day}}{24\ut{h}}\cdot\frac{1\ut{h}}{3600\ut{s}}\\ &=\frac{2125}{14556}\ut{m/s}\\ &\approx 0.1459879087661445\ut{m/s}\\ &\approx 1.460\times10^{-1}\ut{m/s}\\ \end{aligned} $$