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

 2089  181 WBJEEWBJEE 2015Motion in a Plane Report Error

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.