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  4. Two particles A and B having different masses are projected from a tower with same speed. A is projected vertically upward and B vertically downward. On reaching the ground

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Q. Two particles $A$ and $B$ having different masses are projected from a tower with same speed. $A$ is projected vertically upward and $B$ vertically downward. On reaching the ground

WBJEEWBJEE 2015Motion in a Plane

Solution:

The situation is diagrammatically as below
image
When A is projected with a vertical speed after sometime it comes on the same level with same speed as it was projected. Now, the downward speeds of A and B at the level-X is same. So, on reaching the ground, velocity of A and B are same.