The solution to the problem is as follows:
mass of the bullet velocity of the bullet = mass of the gun velocity of the gun
0.005 kg v = 0.52 kg 2.1 m/s
-> v = (0.52kg * 2.1 m/s) / 0.005 kg = 218.4 m/s
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!