Question

a bullet has a mass of 10 grams fired from a gun of 4kg with a velocity of 400m/s. find the recoil velocity

Answer 1

Primary velocity of gun and bullet is 0 Last velocity of gun is 400m/s The last velocity of gun is v Mv+m×400=0 4v=400×(10÷1000) 4v=4 v=1m/s