A particle initially located at the origin has an acceleration of a=3jm/s^2 and an initial velocity of Vi=5im/s. (a)the vector position and velocity at any time t

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

i would say the answer is food.

hope this !