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NEETPhysicsCenter of Mass, Momentum and Collision

Assertion (A): During collision between two objects, the momentum of colliding objects is conserved only in direction perpendicular to line of impact. Reason (R): The force on colliding objects in perpendicular direction to line of impact is zero.

Options

  1. AAssertion (A) is True, Reason (R) is True; Reason (R) is a correct explanation for Assertion (A)
  2. BAssertion (A) is True, Reason (R) is True; Reason (R) is not a correct explanation for Assertion (A)
  3. CAssertion (A) is True, Reason (R) is False.
  4. DAssertion (A) is False, Reason (R) is True.

Correct answer

D. Assertion (A) is False, Reason (R) is True.

Step-by-step solution

Assertion (A): "During collision between two objects, the momentum of colliding objects is conserved only in direction perpendicular to line of impact." This is false. - In reality, linear momentum is conserved in all directions (because external force is absent). - What is special is that along the line of impact, momentum is not separately conserved for each object (because of impulsive forces), but the total system momentum is always conserved in both perpendicular and parallel directions. Reason (R): "The force

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