The time dependence of the position of a particle of mass is given by

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems

Problem

The time dependence of the position of a particle of mass

m = 2

is given by

\vec{r}(t) = 2t\hat{i} - 3t^2\hat{j}

. Its angular momentum, with respect to the origin, at time

t = 2

is : (1)

48(\hat{i} + \hat{j})

(2)

36\hat{k}

(3)

-34(\hat{k} - \hat{i})

(4)

-48\hat{k}