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

A kangaroo jumps to a vertical height of 2.8m. How long was it in the air before returning to Earth?

2. Relevant equations

delta y= Vot + 1/2at^2

3. The attempt at a solution

I had to get t by itself so I rearranged the equation to say: t= delta y/.5(9.8) all under a square root. First off, I'm not sure if I set up the equation correctly, and secondly, I am not sure if just the top (delta y) goes under the square root or both the top and bottom(or the whole side of the equation) goes under the square root.

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# Homework Help: Vertical Kinematics

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