(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A rubber ball is shot straight up from the ground with speedv. Simultaneously, a second rubber ball at height_{o}hdirectly above the first ball is dropped from rest.

At what height above the ground do the balls collide? Your answer will be a symbolic expressions in terms of v_{o}and g.

2. Relevant equations

v=v0+at

x=x0+v0t+(1/2)at2

v2=v20+2aΔx

3. The attempt at a solution

For the first ball, I have [tex]v_f = \sqrt{v^2_o+2g}[/tex]

For the second ball (which I think I have wrong), I have [tex]v_f = \sqrt{2(g)(-h)}[/tex]

Unfortunately I'm not really sure where to go from here, or if I'm even headed in the right direction in the first place. Can someone please help?

Thanks.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: 1D Kinematics Easy

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