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NEETPhysicsMotion in Two Dimensions

Assertion : If in a projectile motion, we take air friction into consideration, then (t_ ascent < t_ descent ). Reason : During ascent magnitude of retardation is greater than magnitude of acceleration during descent.

Options

  1. AIf both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
  2. BIf both Assertion and Reason are true 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

Both the assertion and the reason are correct, and the reason is the correct explanation of the assertion. - Reasoning for Assertion: In projectile motion with air friction, the opposing drag force acts in the same direction as gravity during ascent, increasing the net downward acceleration ( ( .a_ ascent =g+a_ friction ) ). During descent, the drag force opposes gravity, reducing the net acceleration ( (a_ descent =g-a_ friction )). Because the acceleration is greater on the way up, the time to reach the peak ( (t

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