A steel sphere A of mass m, moving with velocity 4 m/s, collides elastically and obliquely with another identical stationary steel sphere B. After the impact sphere B starts moving with velocity V making an angle of with the original direction of sphere A. Find V.
After the impact, velocity vectors of the spheres will be mutually perpendicular,
Conserving Momentum,
Solving, we get V = 2 m/s.