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NEETPhysicsMotion in One Dimension

Assertion : The v-t graph perpendicular to time axis is not possible in practice. Reason : Infinite acceleration cannot be realized in practice.

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

A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion

Step-by-step solution

Assertion is correct: A v-t graph perpendicular to the time axis means that for a single instant of time, there are infinite values of velocity, which is physically impossible. This implies an instantaneous, infinite change in velocity. Reason is correct: Infinite acceleration means an instantaneous change in velocity. Since acceleration (= v / t ), if ( t ) approaches zero (as in a vertical line on a v-t graph), and ( v ) is finite, then acceleration approaches infinity, which cannot be realized in practice. The r

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