Two balls A and B of masses m and 2 m are in motion with velocities 2v and v, respectively. Compare: Their momentum.

Explanation

To compare the momentum of two balls A and B with given masses and velocities, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Masses and Velocities:**
- Mass of ball A, \( m_A = m \)
- Mass of ball B, \( m_B = 2m \)
- Velocity of ball A, \( v_A = 2v \)
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