Ononot — An object's drag force is given by Fd = \frac{1}{2} \rho v^2

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An object's drag force is given by $F_d = \frac{1}{2} \rho v^2 C_d A$ . If $\rho = 1.225 \text{ kg/m}^3$ (air density), $v = 30 \text{ m/s}$ , $C_d = 0.3$ , and $A = 0.4 \text{ m}^2$ , express the force in units of $kN$ (kilonewtons).