AIIMS 2019 Physics Projectile Motion Assertion Reason Question
Assertion: Three projectiles are moving in different paths in the air. Vertical component of relative velocity between any of the pair does not change with time as long as they are in air. (Neglecting the effect of air friction)
Reason: Relative acceleration between any of the pair of projection is zero.
If both assertion and reason are true and reason is correct explanation of assertion.
If both assertion and reason are true and reason is not correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion is true because the vertical component of relative velocity between two projectiles remains constant when they are in free fall, as both experience the same gravitational acceleration (g), leading to no change in their vertical separation over time. The reason is also true, as the relative acceleration between any two projectiles is indeed zero when neglecting air friction, confirming that their vertical components of velocity do not change. Therefore, option A is correct because the reason accurately explains the assertion.
Options B, C, and D are incorrect because they either misinterpret the relationship between the assertion and reason or incorrectly state the truth of either statement.
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