A body A is thrown vertically upwards with such a velocity that it reaches a maximum height of h. Simultaneously, another body B is dropped from height h. It strikes the ground and does not rebound. The velocity of A relative to B versus time graph is best represented by (upward direction is positive).

Options

A.
B.
C.
D.

Answer

C

Explanation

c. Initial relative velocity of A w.r.t. `B = u - 0 = u.` It
will remain constant till B reaches ground. B stops on colliding with ground, and A comes down with increasing velocity.