Question

4. Assertion (A): The distance and displacement are different physical quantities.
Reason (R): Distance is the length of actual path while displacement is directed distance between initial and
final positions.
5. Assertion (A): A body can have acceleration even it its velocity is zero at a given instant.
Reason (R): A body is momentarily at rest when it reverses its direction of motion

Answer 1

1. assertion is correct but reason is not correct explanation of assertion
2. assertion is correct but reason is wrong

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Answer 2

4. Both Assertion and Reason are correct and Reason is the correct explanation of Assertion

5. Both the statements are correct, but reason is not the correct explanation of assertion.

Explanation:

• Distance is the length of any path connecting any two places.
• When measured along the shortest path between any two points, displacement is the direct distance between them.
• The direction is ignored when calculating distance. The direction is accounted for in the displacement calculation.
• When a body moving vertically upward reaches its highest point, it pauses for a brief while before changing course.
• While it is moving at its greatest speed, its acceleration is equal to the acceleration caused by gravity.

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