A particle moves with a constant velocity parallel to the X-axis. Its angular momentum with respect to the origin

Options

A. is zero
B. remains constant
C. goes on increasing
D. goes on decreasing

Answer

B

Explanation

`vec(L)=vec(r )xx vec(p)=vec(r )xx m vec(v)`
`|vec(L)|=|vec(r )xx m vec(v)|`
= rmv = constant.