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

A projectile was fired across level ground at an initial angle of 43.00 degrees above the horizontal. During its flight, it reached a maximum height of 2974 metres. What was the initial speed of this projectile?

2. Relevant equations

I assume that the correct equation to use is V_{y}^{2}= V_{0y}² - 2g(y - y_{0}).

3. The attempt at a solution

To be honest I'm not even sure how to go about it. Given the equation, I would rearrange for V_{0y}² however that doesn't seem to work at all. I'm not even sure what the value of V_{y}has to be. I also suspect the angle comes into play, but I'm not sure what it can tell me. Any pointers greatly appreciated.

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# Homework Help: Initial velocity of projectile given angle and max height

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