From a rifle of mass 3 \(kg\), a bullet of mass 25 \(g\) is fired with an initial velocity of 20 ms1. Calculate the initial recoil velocity of the rifle.
 
Let us consider,
 
\(m_1\) be the mass of the bullet
 
\(m_2\) be the mass of the riffle
 
\(v_1\) be final velocity of the bullet
 
\(v_2\) be final velocity of the riffle
 
\(u\) be the initial velocities of the bullet and riffle before the collision
 
From the law of conservation of momentum, We know that,
 
  
Recoil velocity of the riffle \(=\)  ms1.
 
Important!
Note: Enter the values up to three decimal.