# A gun of mass 20 kg has bullet of mass 0.1 kg in it. The gun is free to recoil 804 J of recoil energy are released on firing the gun. The speed of bullet (ms−1 ) is

Question: A gun of mass 20 kg has bullet of mass 0.1 kg in it. The gun is free to recoil 804 J of recoil energy are released on firing the gun. The speed of bullet (ms−1 ) is

(A) $\sqrt{804\times 2010}$

(B) $\sqrt{\dfrac{2010}{804}}$

(C) $\sqrt{\dfrac{804}{2010}}$

(D) $\sqrt{804\times 4\times 10^{3}}$