PhysicsMedium49×since 2002Q8047The time dependence of the position of a particle of mass m = 2 is given by r→(t)=2ti^−3t2j^\overrightarrow r \left( t \right) = 2t\widehat i - 3{t^2}\widehat jr(t)=2ti−3t2j . Its angular momentum, with respect to the origin, at time t = 2 isA36 k^\widehat kkB- 48 k^\widehat kkC−34(k^−i^)- 34\left( {\widehat k - \widehat i} \right)−34(k−i)D48(i^+j^)48\left( {\widehat i + \widehat j} \right)48(i+j)Check answerSkip