9-47 할리데이 11판 솔루션 일반물리학

$$ \begin{cases} F&=24\ut{N}\\ t&=14\ut{ms}=14\times10^{-3}\ut{s}\\ m&=0.20\ut{kg}\\ \end{cases} $$ $$ \begin{aligned} \Delta \vec p&=\vec J\\ \Delta \vec v&=\frac{Ft}{m}\\ &=\frac{42}{25}\ut{m/s}\\ &=1.68\ut{m/s}\\ &\approx 1.7\ut{m/s}\\ \end{aligned} $$