Two balls of different masses (one lighter and the other heavier) are thrown vertically upward with the same initial speed. Which one will rise to the greater height?

Explanation

To determine which of the two balls (one lighter and the other heavier) will rise to a greater height when thrown vertically upward with the same initial speed, we can analyze the situation using the principles of physics, specifically the equations of motion under uniform acceleration.

### Step-by-Step Solution:

1. **Identify the Variables**:
- Let the mass of the lighter ball be \( m_2 \) and the mass of the heavier ball be \( m_1 \).
- Both balls are thrown with the same initial speed \( u \).
- The acceleration due to gravity acting on both balls is \( g \) (downward).
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