A particle of mass `m` is moving in yz-plane with a unifrom velocity `v` with its trajectory running parallel to +ve y-axis and intersecting z-axis at `z = a` Fig. The change in its angular momentum about the origin as it bounces elastically from a wall at y = constant is :

A particle of mass m is moving in YZ-plane with a uniform velocity v with its trajectory running parallel to +ve Y-axis and intersecting Z-axis at z=a in figure. The change in its angular momentum about the origin as it bounces elastically form a wall at y=constant is

A particle of mass m is moving in YZ-plane with a uniform velocity v with its trajectory running parallel to +ve Y-axis and intersecting Z-axis at z=a in figure. The change in its angular momentum about the origin as it bounces elastically form a wall at y=constant is

A particle of mass m is moving in yz-plane with a uniform velocit v with its trajectory running paralel to + ve y-axis and intersecting z-axis at z = a show in the figure. The change in its angular momentum about the origin as it bounces elastically from a wal at y = constant is

A particle of mass m is moving with constant velocity v parallel to the x-axis as shown in the figure. Its angular momentum about origin O is

A particle of mass m is moving with constant velocity v parallel to the x-axis as shown in the figure. Its angular momentum about origin O is