Question

State law of conservation of momentum. A bullet of mass 10g is fired from a gun of mass 6kg with a velocity of 300 meter per second. Calculate the recoil velocity of gun

Answer 1

Answer:

Conservation of linear momentum gives,

m1v1+m2v2=0

m1v1=−m2v2

v1=m1−m2v2

Given, m1=10g=(100010)kg, 

m2=1 kg,

v2=−5m/s

∴v1=10/1000+1×5

or v1=500m/s.