B.1

\frac{1}{2} m v^{2} = \frac{1}{2} ρ A v t v^{2} = \frac{1}{2} ρ A t v^{3}

${\frac{1}{2} m v^2 = \frac{1}{2} \rho A v t v^2 = \frac{1}{2} \rho A t v^3}$

Error