Question

state the law of conservation of momentum apply the soil to explain the recoil of a gun when a shell is fired from it​

Answer 1

Answer:

Statement: In absence of external force total momentum of system remains constant. Recoil velocity of gun is (m1v1 / m2) in opposite direction of velocity of shell, hence -ve sign

Answer 2

Answer:

law of conservation states that:m1u1+m2u2=m1v1+m2v2 where m=mass,u=initial velocity,v=final velocity.

when the shell is fired from the gun, it observes backward recoil force in which direction the bullet is fired.To find the direction we apply the linear momentum formula:0=mv^+mv where mv^ is the recoil velocity of the gun

so mv^=-mv

v^=-mv/m

so,the direction of the applied recoil velocity of the gun is opposite to the direction in which bullet/shell is fired

Explanation: