At one instant, a 0.80 kg particle is located at the position r = (2.0 m) i

Question:

At one instant, a 0.80 kg particle is located at the position r = (2.0 m) i + (3.0 m) j. The linear momentum of the particle lies in the xy plane and has a magnitude of 2.4 kg ∙ m/s and a direction of 115° measured counterclockwise from the positive direction of x. What is the angular momentum of the particle about the origin, in unit-vector notation?