Two particles each of mass `m` and speed `v`, travel in opposite direction along parallel lines separated by a distance d. Show that the vector angular momentum of this system of particles is the same about any point taken as origin.

Explanation

To show that the vector angular momentum of the system of two particles is the same about any point taken as the origin, we can follow these steps:

### Step 1: Define the system
We have two particles, each of mass \( m \) and speed \( v \), moving in opposite directions along parallel lines separated by a distance \( d \).

### Step 2: Choose an arbitrary point as the origin
Let’s denote an arbitrary point \( O \) as the origin from which we will calculate the angular momentum of the system.

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