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NEETPhysicsMotion in One Dimension

Assertion : Acceleration of a moving particle can change its direction without any change in direction of velocity. Reason : If the direction of change in velocity vector changes, the direction of acceleration vector also Changes.

Options

  1. AIf both Assertion and Reason are correct and Reason is the correct explanation of Assertion
  2. BIf both Assertion and Reason are correct but Reason is not the correct explanation of Assertion
  3. CIf Assertion is true but Reason is false
  4. DIf Assertion is false but Reason is true

Correct answer

D. If Assertion is false but Reason is true

Step-by-step solution

Assertion is false: Acceleration is the rate of change of velocity. If the direction of velocity remains unchanged, it means the motion is along a straight line without any change in direction. In such a case, for acceleration to change direction, the velocity would also have to change its direction, which contradicts the assertion. For example, in projectile motion, acceleration (due to gravity) is constant downwards, but the velocity vector continuously changes direction. Reason is true: Acceleration is defined a

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