Question

Could you please help me with this problem:

police scientist fires a 4.5 kg rifle. When fired, the gun recoils, hits the scientists shoulder and stops in 0.32 seconds. The 20 gram bullet fired by the gun moves at constant speed across the room, then passes through a 10 kg ballistic pendulum. The bullet passes through the pendulum, emerging at 80 m/s. The pendulum, which is on a 1.2 m long cord, swings up to an angle of 8° after being hit. Find 3. A a) the speed of the bullet when leaving the gun b) the force of the gun on the scientists shoulder

The final answers are listed below:

Please show ALL of your work and try not to skip any step, thank you!

Answer 1

***************************************************************************************************
Check the answer and let me know immediately if you find something wrong... I will rectify the mistakes asap if any