A bullet weighing 10 g flying at a speed of 300 m / s hits a pendulum weighing 1 kg and gets stuck in it.

A bullet weighing 10 g flying at a speed of 300 m / s hits a pendulum weighing 1 kg and gets stuck in it. With what linear speed will the pendulum begin to move?

Given: mp (bullet mass) = 10 g = 0.01 kg; Vp (bullet velocity before hitting the pendulum) = 300 m / s; mm (mass of the pendulum) = 1 kg.
To determine the linear speed acquired by the pendulum, we apply the law of conservation of momentum: (mp + mm) * V = mp * Vp and V = mp * Vp / (mp + mm).
Calculation: V = 0.01 * 300 / (0.01 + 1) = 2.97 m / s.
Answer: After being hit by a bullet, the pendulum will begin to move at a linear speed of 2.97 m / s.