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Physics · MOTION IN A STRAIGHT LINE

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): A body can have zero velocity and still be accelerating. Reason (R): Acceleration is the rate of change of velocity; at the highest point of a vertically thrown ball, velocity is zero while acceleration is \( g \) downwards. In the light of the above statements, choose the correct answer from the options given below:

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. (A) is true but (R) is false.
  4. (A) is false but (R) is true.

Correct answer · Option 1

Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation

At the peak of vertical motion, instantaneous velocity is zero, but gravity continues to act, producing a non-zero downward acceleration.
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