(A) : The path followed by one projectile as observed by another projectile is a straight line in uniform gravitation field.
(R) : The relative velocity between two projectiles at a given place doesn’t change with time. Because their relative acceleration is zero.

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Both (A) and (R) are true and (R) is not the correct explanation of (A)

(A) is true but (R) is false

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

Both (A) and (R) are false

answer is A.

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Detailed Solution

For two projectile, acceleration is same and it is equal to acceleration due to gravity. So, the relative acceleration is zero. Hence, the relative velocity between two projectiles at a given place doesn’t change with time.

As the relative acceleration is zero, relative velocity is zero. So, the path followed by one projectile as observed by another projectile is a straight line in uniform gravitation field.

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

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