A block of mass m slides along a floor while a force of magnitude F is applied to it at an angle θ as…

A block of mass $m$ slides along a floor while a force of magnitude $F$ is applied to it at an angle $\theta$ as shown in figure. The coefficient of kinetic friction is ${\mu }_K$. Then, the block's acceleration $a$ is given by : ($g$ is acceleration due to gravity)