= (2.881-2.88k) m and velocity vector At one instant, force F = 5.53 N acts on a 0.153 kg object that has position vector 7 = (-4.02 + 4.02k) m/s . About the origin and in unit-vector notation, what are (a) the object's angular momentum and (b) the torque acting on the object? (a) Number (b) Number i i + i + + <.> i i k Units k Units