A rifle of mass 2 kg is suspended by strings.The rifle fires a bullet of mass 0.01 kg at a speed of 200 m/s.The recoil velocity of the rifle is about

Question

Quizplus · Accepted Answer

The recoil velocity of the rifle can be calculated using the conservation of momentum. The initial momentum is zero since the rifle is at rest. After firing, the momentum of the bullet and the rifle must be equal and opposite. Using the formula: (mass of bullet * velocity of bullet) = (mass of rifle * recoil velocity of rifle), we get (0.01 kg * 200 m/s) = (2 kg * recoil velocity). Solving for the recoil velocity gives 1 m/s.

A Rifle of Mass 2 Kg Is Suspended by Strings