Two projectiles, displacement vs. time

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Homework Help Overview

The discussion revolves around the motion of two projectiles, specifically focusing on their displacement versus time graph. The original poster describes a scenario where one ball is thrown upward, followed by a second ball thrown at the same initial velocity after the first reaches its maximum height.

Discussion Character

  • Exploratory, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to sketch a displacement vs. time graph for both balls and is seeking assistance in determining where their paths intersect. Some participants suggest that the original poster should provide more work to clarify their difficulties.

Discussion Status

The discussion is ongoing, with the original poster expressing uncertainty about the final part of the problem. Some guidance has been offered regarding the need for more detailed work to facilitate understanding.

Contextual Notes

The original poster has provided a maximum height formula, h = vo^2/g, but has not yet resolved the question of where the paths of the two balls cross.

anoorani
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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
 
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Well ... draw a graph. You have to show us some work before we know what you are having trouble with.
 
And the title could be more descriptive, too.

Moderator's edit: note, thread title has been changed since this was posted.
 
Last edited by a moderator:


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

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