일반물리학 1 — Rolling, Torque, and Angular Momentum: Problem 28

28 A 3.0 kg particle-like object moves in a plane with velocity components \(v_x = 30 \text{ m/s}\) and \(v_y = 60 \text{ m/s}\) as it passes through the point with \((x, y)\) coordinates of \((3.0, -4.0) \text{ m}\). Just then, in unit-vector notation, what is its angular momentum relative to (a) the origin and (b) the point located at \((-2.0, -2.0) \text{ m}\)?