Question

A field gun of mass 1.5 ,fires a shell of mass 15kg with a velocity of 150m/s. Calculate the velocity of the recoil of the gun ?

Answer 1

m1=m
m2=1.5
v1=1.5 
v2=150 
u1,u2=0
m1u1+m2u2=m1v1+m2v2
0=-1.5  + 1.5*150
-1.5+225=0
-1.5m=-225
m=150kg