Two particles of mass `1kg` and `2kg` are moving along the same line with speeds `2m//s` and `4m//s` respectively. Calculate the speed of the centre of mass of the system if both the particles are moving in the same direction.

Explanation

To find the speed of the center of mass of the system consisting of two particles, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Masses and Velocities**:
- Let the mass of the first particle \( m_1 = 1 \, \text{kg} \) and its velocity \( v_1 = 2 \, \text{m/s} \).
- Let the mass of the second particle \( m_2 = 2 \, \text{kg} \) and its velocity \( v_2 = 4 \, \text{m/s} \).

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