Height of the two balls collision

AI Thread Summary
The discussion centers on a physics problem involving two balls: Ball A is dropped from a height 'h' while Ball B is thrown upward. The key condition is that at the moment of collision, Ball A's speed is twice that of Ball B. Participants suggest writing equations for the vertical positions of both balls as functions of time and setting them equal to determine the collision height. The importance of using "y" for vertical position is also highlighted to avoid confusion. Clear equations and work are necessary for further assistance in solving the problem.
larryboi7
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Homework Statement


Ball A is dropped from the top of a building of height 'h' at the same instant that Ball B is thrown vertically upward from the ground. When the balls collide, they are moving in opposite directions, and the speed of A is twice the speed of B. At what height does the collision occur?

Homework Equations


x1=x0 + Vot - 1/2gt^2

I've been having a hard time with this. I just can't get it.
 
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larryboi7 said:

Homework Statement


Ball A is dropped from the top of a building of height 'h' at the same instant that Ball B is thrown vertically upward from the ground. When the balls collide, they are moving in opposite directions, and the speed of A is twice the speed of B. At what height does the collision occur?


Homework Equations


x1=x0 + Vot - 1/2gt^2




I've been having a hard time with this. I just can't get it.

Usually you will use "y" for the vertical position variable (small point, but confusing otherwise).

Write an equation for the position of each ball as a function of time, and set them equal (that's where they collide in the y axis)... Please show us your work so that we can help you.
 

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