Hello, I'm having a bit of trouble starting this problem:(adsbygoogle = window.adsbygoogle || []).push({});

A ball is dropped from a height of 30 m. At the same instant another ball is thrown straight up from the ground with aspeed of 30 m/s. How long are the balls in the air before they reach the same height?

I'm not sure what equation to use here. Any help would be appreciated. Thanks in advance.

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# Homework Help: 2 body 1 dimension problem

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