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Toranc3

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## Homework Statement

A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 1 second later. You may ignore air resistance

If vo is greater than some value vmax, a value of h does not exist that allows both balls to hit the gorund at the same time. Solve for vmax.

## Homework Equations

y=yo+vo*t+1/2*a*t^(2)

## The Attempt at a Solution

I am not sure how to start it. Can somebody give me some hints?

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