Collision

Collision

Collision is an interaction between two bodies during which momentum is exchanged.

### Formula

$$m_1u_1+m_2u_2=m_1v_1+m_2v_2$$

### Terminologies

- m₁, m₂ → Masses of two bodies.

- u₁, u₂ → Initial velocities.

- v₁, v₂ → Final velocities.

### Conditions / Special Cases

- Linear momentum is conserved if external force is zero.

$$F_{external}=0$$

### Usage

- Used in collision and explosion problems.