2-15 할리데이 11판 솔루션 일반물리학

$$\begin{cases} v&=303\ut{km/h}\\ t&=120\ut{ms}\\ \end{cases}$$ $$\begin{aligned} \Delta x &= vt\\ &=303\ut{km/h}\cdot120\ut{ms}\\ &=303\ut{km/h}\cdot\frac{1000\ut{m}}{1\ut{km}}\cdot\frac{1\ut{h}}{3600\ut{s}}\cdot120\ut{ms}\cdot\frac{1\ut{s}}{1000\ut{ms}}\\ &=\frac{101}{10}\ut{m}\\ &=10.1\ut{m}\\ &\approx 1.0\times10\ut{m} \end{aligned}$$