JEE Main 2024 Physics question
An artillery piece of mass M₁ fires a shell of mass M₂ horizontally. Instantaneously after the firing, the ratio of kinetic energy of the artillery and that of the shell is:
Answer: (A)
Solution
By momentum conservation the two have equal and opposite momenta, P₁ = P₂. With K = P²/2M, K₁/K₂ = M₂/M₁.