Recoil of Gun
### Formula
$$m_gv_g=m_bv_b$$
### Velocity of Gun
$$v_g=\frac{m_bv_b}{m_g}$$
### Terminologies
- mg β Mass of gun.
- mb β Mass of bullet.
- vg β Recoil velocity of gun.
- vb β Velocity of bullet.
### Conditions / Special Cases
- Total momentum before firing is zero.
$$P_{initial}=0$$
### Usage
- Used in recoil problems.