Conservation of Linear Momentum

📊 intermediate

$$m_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2$$

Total momentum remains constant in the absence of an external force.

Variables & Units

$u, v$

Initial and final velocities

Unit: $m/s$

Key Information

📐 Derived From

Newton's Third Law.

💡 Example

Recoil of a gun.

🔧 Applications

Astro-physics and particle collisions.

⚠️ Constraints

Isolated system (External Force = 0).

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