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NEET2012PhysicsCenter of Mass, Momentum and CollisionActual

Two spheres A and B of masses m₁ and m₂ respectively collide. A is at rest initially and B is moving with velocity y along x -axis. After collision B has a velocity v 2 in a direction perpendicular to the original direction. The mass A moves after collision in the direction

Options

  1. Asame as that of B
  2. Bopposite to that of B
  3. C= ⁻¹ ( 1 2 ) to the x -axis
  4. D= ⁻¹ ( -1 2 ) to the x -axis

Correct answer

C. = ⁻¹ ( 1 2 ) to the x -axis

Step-by-step solution

Here, p _i=m₂ v i +m₂ 0 p _f=m₂ v 2 j +m₁ v ₂ Law of conservation of momentum gathered p _i= p _f m₂ v i =m₂ v 2 j +m₁ v ₁ v ₁= m₂ m₁ v i + m₂ m₁ v 2 j gathered From this equation we can find aligned & = 1 2 & = ⁻¹ ( 1 2 ) to the x -axis. aligned

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