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

May 10, 2022

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Physics Problems

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

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

Answer: Option (D)

Solution:

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