A bullet of mass 10 g is horizontally fired with velocity 300 m s⁻¹ from a pistol of mass 1 kg. What is the recoil velocity of the pistol?
- A.0.3 m s⁻¹
- B.3 m s⁻¹
- C.-3 m s⁻¹
- D.-0.3 m s⁻¹
Show answer
By the conservation of momentum, the pistol moves back with 3 m s⁻¹, and the minus sign shows it moves opposite to the bullet.
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