1.
A particle of mass 2kg2\,\text{kg} located at the position (i^+j^)m(\hat{i} + \hat{j})\,\text{m} has a velocity 2(i^j^+k^)m/s2(\hat{i} - \hat{j} + \hat{k})\,\text{m/s}. Its angular momentum about the zz-axis in kg⋅m2/s\text{kg·m}^2/\text{s} is: