Question

A sphere of mass ‘m’ moving with velocity V collides head-on on another sphere of same mass which is at rest. The ratio of final velocity of second sphere to the initial velocity of the first sphere is (e is coefficient of restitution and collision is inelastic)

(A) \(\frac{e-1}{2}\)

(B) \(\frac{e}{2}\)

(C) \(\frac{e+1}{2}\)

(D) e

Answer 1

Initial momentum = mv

Final momentum = mv₁ + mv₂

(C) \(\frac{e+1}{2}\)