일반물리학 1 — Force and Motion-I: Problem 3

3 A body has an acceleration of $3.00 \text{ m/s}^2$ at $30.0^\circ$ to the positive direction of an $x$ axis. The mass of the body is $2.00 \text{ kg}$. Find (a) the $x$ component and (b) the $y$ component of the net force acting on the body. (c) What is the net force in unit-vector notation?