A gun of mass 20kg has a bullet of mass 0 1kg in it 804J of recoil energy is released - Science - Work and Energy

Question

A gun of mass 20kg has a bullet of mass 0 1kg in it 804J of recoil
energy is released on firing the gun What is speed of bullet in m/s

Pratyay Ghosh · Accepted Answer

Let the momentum of the gun is Pg
Eg=Pg22mg⇒Pg=2mgEg=2×20×804=179 33 kgm/s
Momentum of the bullet is same as Pg
Speed of the bullet,
v=179 330 1=1793 3 m/s

A gun of mass 20kg has a bullet of mass 0.1kg in it.804J of recoil energy is released on firing the gun. What is speed of bullet in m/s