Two bodies A and B have masses in the ratio 5 : 1 and their kinetic energies are in the ratio 125 : 9. Find the ratio of their velocities.

Explanation

To solve the problem, we need to find the ratio of the velocities of two bodies A and B given their masses and kinetic energies.

### Step-by-Step Solution:

1. **Identify the given ratios**:
- The ratio of masses \( m_A : m_B = 5 : 1 \)
- The ratio of kinetic energies \( K_A : K_B = 125 : 9 \)

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