Two projectiles, displacement vs. time

[anoorani]

A ball is thrown upward with an initial speed, vo.
When it reaches the top of its flight, at a height h, a second ball is thrown at the same initial velocity.
sketch a displacement vs time graph for both balls.
where do the balls cross from the graph.
Find the height where the paths cross.

answers: above h/2 and 3/4h

please help

 

[phinds]

Well ... draw a graph. You have to show us some work before we know what you are having trouble with.

 

[lep11]

And the title could be more descriptive, too.

Moderator's edit: note, thread title has been changed since this was posted.

 

[anoorani]

This is what I have got...
I am having trouble in the last part..
Though I have got h (max ht) = vo^2/g